Feedback method and acquisition method for grouping indication information and device

ABSTRACT

The present invention provides a method and device for feeding back grouping indication information and a method and device for acquiring grouping indication information. The method for feeding back grouping indication information includes: determining M resources from a candidate resource set and dividing the M resources into N first-type resource groups, where M is an integer greater than or equal to 1 and N is a positive integer less than or equal to M; and feeding back indication information for indicating the M resources and first-type grouping indication information for indicating that the M resources are divided into the N first-type resource groups to a first communication node. Resources in the candidate resource set include at least one of: a transmission beam resource, a transmission antenna resource, a transmission port resource, a transmission frequency domain resource, a transmission sequence resource and a transmission time domain resource.

CROSS REFERENCE TO RELATED APPLICATIONS

This is a U.S. National Phase Application, filed under 35 U.S.C. 371, ofInternational Patent Application No. PCT/CN2017/072915, filed on Feb. 4,2017, which claims priority to Chinese patent application No.201610665321.2 filed on Aug. 11, 2016, and claims priority to Chinesepatent application No. 201610848897.2 filed on Sep. 23, 2016, contentsof which are incorporated herein by reference in their entireties.

TECHNICAL FIELD

The present invention relates to the field of wireless communicationsand, in particular, to a method and device for feeding back groupingindication information and a method and device for acquiring groupingindication information.

BACKGROUND

As an important candidate technology for the 5th generation (5G) mobilecommunication technology in the future, high frequency techniques haveavailable wide bandwidths to provide high-rate data communications.However, the high frequency techniques have unique transmissioncharacteristics compared with low frequency carriers used in Long-TermEvolution (LTE) in the existing art. A remarkable characteristic of thehigh frequency is big path losses, which greatly affects a communicationdistance of the high frequency techniques. However, since thehigh-frequency signal has a relatively short wavelength, many antennaelements may be arranged in a small area, and accordingly amulti-antenna technology is adopted to obtain high gains and narrowbeams to reduce the path losses and increase cell coverage, enablinghigh frequencies to be used for cellular communications.

However, different beams have different transmission characteristics,such as different receiving manners, different receiving performance,different transmission paths, different related characteristics anddifferent multiplexing manners. In the existing art, transmission beamscannot be reasonably and flexibly managed and scheduled.

For example, beam training needs to be performed between two nodesperforming beam communications so that a transmitting end (correspondingto a first communication node in the present invention) and a receivingend (corresponding to a second communication node in the presentinvention) may perform transmission based on aligned beams. If there aremultiple aligned pairs of transmission and receiving beams between thetransmitting end and the receiving end, the transmitting end schedulesone or more beams from multiple aligned beams based on systemperformance. The transmitting end needs to inform the receiving end ofthe transmission beam used for transmitting data, such that thereceiving end can receive the data with an appropriate receiving beam.In this case, the beam used for transmitting data needs to have a highcorrelation with the transmission beam used in the beam training phase,especially when multiple transmission beams correspond to one receivingbeam, such as a downlink case. Big restrictions are imposed on thetransmitting end to flexibly adjust the transmission beams. Moreover,how to perform spatial division multiplexing transmission according tofeedback information in the beam training phase is also an urgentproblem to be solved.

No effective solution has been provided to solve the problem in theexisting art that reasonable and flexible management and scheduling oftransmission beams and/or receiving beams cannot be implemented.

SUMMARY

Embodiments of the present invention provide a method and device forfeeding back grouping indication information and a method and device foracquiring grouping indication information to solve at least the problemin the existing art that transmission beams and/or receiving beamscannot be reasonably and flexibly managed and scheduled.

An embodiment of the present invention provides a signal receivingmethod. The method includes: determining M resources from a candidateresource set and dividing the M resources into N first-type resourcegroups, where M is an integer greater than or equal to 1 and N is apositive integer less than or equal to M; and feeding back indicationinformation for indicating the M resources and first-type groupingindication information for indicating that the M resources are dividedinto the N first-type resource groups to a first communication node.Resources in the candidate resource set include at least one of: atransmission beam resource, a transmission antenna resource, atransmission port resource, a transmission frequency domain resource, atransmission sequence resource and a transmission time domain resource.

In an alternative embodiment, the determining M resources from acandidate resource set includes: determining the candidate resource set,receiving a transmission signal transmitted on the candidate resourceset, and determining the M resources from the candidate resource setaccording to the received transmission signal. The candidate resourceset includes Q second-type resource groups, where Q is an integergreater than or equal to 1.

In an alternative embodiment, the Q second-type resource groups in thecandidate resource set are divided according to at least one of thefollowing resource types: a beam resource, an antenna resource, a portresource, a frequency domain resource, a transmission sequence resourceand a time domain resource.

In an alternative embodiment, the determining M resources from acandidate resource set includes: determining the M resources from thecandidate resource set according to a channel quality and/or a signalquality of each resource in the candidate resource set.

In an alternative embodiment, at least one of the following is included:resources in a same first-type resource group belong to one or more ofthe Q second-type resource groups; resources in a same second-typeresource group belong to one or more of the N first-type resourcegroups; and an intersection set of the N first-type resource groups isnot an empty set.

In an alternative embodiment, the dividing the M resources into Nfirst-type resource groups includes at least one of the following:dividing the M resources into the N first-type resource groups accordingto receiving resources corresponding to the M resources; dividing the Mresources into the N first-type resource groups according to a signalquality on each of the M resources or a channel quality corresponding tothe each of the M resources; dividing the M resources into the Nfirst-type resource groups according to a predetermined multiplexingmanner; dividing the M resources into the N first-type resource groupsaccording to a timing advance (TA) parameter; dividing the M resourcesinto the N first-type resource groups according to a length of a cyclicprefix (CP); dividing the M resources into the N first-type resourcegroups according to a quasi-co-location relationship; dividing the Mresources into the N first-type resource groups according to groupingconfiguration information; and dividing the M resources into the Nfirst-type resource groups according to a channel characteristic.

In an alternative embodiment, the dividing the M resources into the Nfirst-type resource groups according to a predetermined multiplexingmanner includes: dividing the M resources into the N first-type resourcegroups according to a space division multiplexing manner, whereresources not supporting space division multiplexing are grouped into asame first-type resource group, resources supporting the space divisionmultiplexing are grouped into different first-type resource groups, anda number of first-type resource groups is greater than or equal to amaximum number of space division multiplexing layers; or the resourcessupporting the space division multiplexing are grouped into a samefirst-type resource group, the resources not supporting the spacedivision multiplexing are grouped into different first-type resourcegroups, and a number of space division multiplexing layers of theresources in the same first-type resource group is less than or equal toa number of resources in the same first-type resource group.

In an alternative embodiment, one or more types of receiving resourcescorresponding to resources in a same first-type resource group are thesame, or one or more types of receiving resources corresponding to theresources have a difference less than a predetermined threshold. Thereceiving resources include at least one of: a receiving antennaresource, a receiving port resource, a receiving weight resource, areceiving sector resource, a receiving sequence resource, a receivingtime domain resource, a receiving frequency-domain resource and areceiving beam resource; channel qualities corresponding to theresources in the same first-type resource group have a difference lessthan or equal to a threshold R1, and channel qualities corresponding toresources in different first-type resource groups have a differencegreater than a threshold R2, where R1 or R2 is pre-agreed with the firstcommunication node or configured by signaling from the firstcommunication node; receiving signal qualities corresponding to theresources in the same first-type resource group have a difference lessthan or equal to a threshold r1, and receiving signal qualitiescorresponding to the resources in different first-type resource groupshave a difference greater than a threshold r2, where r1 or r2 ispre-agreed with the first communication node or configured by signalingfrom the first communication node; a multiplexing manner set used fortransmitting signals on the resources in the same first-type resourcegroup is a set A, and a multiplexing manner set used for transmittingthe signals on the resources in different first-type resource groups isa set B, where the set B is a true subset of the set A or the set A is atrue subset of the set B; TA parameters used for transmitting the signalon the resources in the same first-type resource group have a differenceless than or equal to a threshold T1, and TA parameters used fortransmitting the signal on the resources in different first-typeresource groups have a difference greater than a threshold T2, where T1or T2 is pre-agreed with the first communication node or configured bysignaling from the first communication node or determined according to aconfiguration of the CP; the CP length used for transmitting the signalon the resources in the same first-type resource group is less than orequal to t1, and the CP length used for transmitting the signal on theresources in different first-type resource groups is greater than t2,where t1 or t2 is pre-agreed with the first communication node orconfigured by signaling from the first communication node; the resourcesin different first-type resource groups correspond to different CPlengths; the resources in the same first-type resource group correspondto a same CP length; transmission signals corresponding to the resourcesin the same first-type resource group are not allowed to be spacedivision multiplexed; transmission signals corresponding to theresources in different first-type resource groups are allowed to bespace division multiplexed; a number of first-type resource groups isequal to a maximum number of transmission layers in space divisionmultiplexing; the transmission signals corresponding to the resources inthe same first-type resource group are quasi-co-located; the resourcesin the same first-type resource group have a same channelcharacteristic; and a channel characteristic of a resource in the Nfirst-type resource groups is acquirable according to a channelcharacteristic of another resource in the same first-type resourcegroup.

In an alternative embodiment, at least one of the following is included:the grouping configuration information includes at least one of:grouping restriction indication information, a threshold parameter fordetermining groups and a parameter for determining a grouping rule,where the grouping configuration information is configured by signalingfrom the first communication node or pre-agreed with the firstcommunication node; transmission signals corresponding to resources in asame first-type resource group are allowed to be space divisionmultiplexed; transmission signals corresponding to resources indifferent first-type resource groups are not allowed to be spacedivision multiplexed; and a number of space division multiplexing layersof the transmission signals corresponding to the resources in the samefirst-type resource group is less than or equal to a number of resourcesin the same first-type resource group.

In an alternative embodiment, the grouping restriction indicationinformation includes the following: a number of resources in a samefirst-type resource group is less than or equal to a, and a number N offirst-type resource groups is less than or equal to b, where both a andb are natural numbers greater than or equal to 1; or a number ofresources in a same first-type resource group is a fixed number a, and anumber N of first-type resource groups is a fixed number b, where both aand b are natural numbers greater than or equal to 1.

In an alternative embodiment, the method further includes: agreeing withthe first communication node that the N first-type resource groups haveat least one of the following characteristics: a same first-typeresource group corresponds to a same set of timing advance (TA)parameters; the same first-type resource group corresponds to a same setof cyclic prefix (CP) parameters; when different resources aretransmitted simultaneously, CP lengths corresponding to the differentresources are determined according to a maximum value of absolute valuesof differences of resource group indexes of first-type resource groupscorresponding to the different resources; different first-type resourcegroups correspond to different CP parameters; resources in the samefirst-type resource group corresponds to a same receiving resource;different first-type resource groups correspond to different receivingresources, and the different receiving resources are generated in a timedivision manner; at least one type of channel or signal state parametercorresponding to the same first-type resource group is the same;resources in the same first-type resource group are allowed to befrequency division multiplexed and/or space division multiplexed and/ortime division multiplexed; resources in the different first-typeresource groups do not support frequency division multiplexing or spacedivision multiplexing, and only support time division multiplexing; andthe resources in the same first-type resource group correspond to a sameindex indication parameter.

In an alternative embodiment, channel parameters being the same orsignal state parameters being the same includes at least one of: rankindicators (RI) being the same; reference signal received powers (RSRP)being the same; channel quality indications (CQI) being the same;receiving signal-to-noise ratios (SNR) being the same; precoding matrixindicators (PMI) being the same; and channel reference signals (CRI)being the same, and/or a same index corresponding to the resources inthe same first-type resource group includes at least one of: a receivingbeam index, a receiving sector index, a receiving antenna index, areceiving sequence index, a receiving port index and a receiving beamcombination index.

In an alternative embodiment, the method further includes: agreeing withthe first communication node on the following characteristic: acapability of simultaneously generating receiving manners correspondingto all the N first-type resource groups is possessed.

In an alternative embodiment, the method further includes: agreeing withthe first communication node that the N first-type resource groups haveone of the following characteristics: resources in a same first-typeresource group are not allowed to be space division multiplexed,resources in different first-type resource groups are allowed to bespace division multiplexed, and a maximum number of space divisionmultiplexing layers is less than or equal to a number of first-typeresource groups; and the resources in the same first-type resource groupare allowed to be space division multiplexed, the resources in differentfirst-type resource groups are not allowed to be space divisionmultiplexed, and a number of space division multiplexing layers of theresources in the same first-type resource group is less than or equal toa number of resources in the same first-type resource group.

In an alternative embodiment, at least one of the following is included:in the first-type grouping indication information, resources in each ofthe N first-type resource groups are sequentially arranged according toreceiving qualities of the resources; the first-type grouping indicationinformation includes at least one of: a number of the first-typeresource groups, indication on the resources in each of the N first-typeresource groups, information on a number of resources in each of the Nfirst-type resource groups, grouping manner indication information,group index information and information on a common parametercorresponding to each of the N first-type resource groups; thefirst-type grouping indication information includes a plurality oflevels of groups; and the first-type grouping indication informationincludes two levels of groups, where one first-level group includes aplurality of second-level groups, where a second communication nodeconfigured to divide the M resources into the N first-type resourcegroups has a capability of simultaneously generating receiving resourcescorresponding to different first-level groups or all first-level groupsand generating, in a time division manner, different receiving resourcescorresponding to the plurality of second-level groups in a samefirst-level group, or a capability of generating, in the time divisionmanner, receiving resources corresponding to resources in the differentfirst-level groups and simultaneously generating receiving resourcescorrespond to different second-level groups or all second-level groupsincluded in the same first-level group.

In an alternative embodiment, at least one of the following is included:the number of the first-type resource groups has a mapping relationshipwith information on resources for transmitting the indicationinformation and the first-type grouping indication information; theinformation on the resources in each of the N first-type resourcegroups, where the information on the resources includes at least one of:index information of the resources in the candidate resource set andchannel quality indication (CQI) information corresponding to each ofthe resources; the common parameter corresponding to each of the Nfirst-type resource groups includes at least one of the followingparameters: a cyclic prefix (CP) length corresponding to each of the Nfirst-type resource groups, a precoding matrix indicator (PMI)corresponding to each of the N first-type resource groups, a rankindicator (RI) corresponding to each of the N first-type resourcegroups, a channel quality indication (CQI) corresponding to each of theN first-type resource groups, a timing advance (TA) parametercorresponding to each of the N first-type resource groups, aquasi-co-location parameter corresponding to each of the N first-typeresource groups, and a receiving resource corresponding to each of the Nfirst-type resource groups; and a resource index set of resources in aj-th first-type resource group in the first-type grouping indicationinformation is {b_(i,j)−1, i=0, 1, . . . , Lj−1}, where 1≤b_(i,j)≤TBN,b_(i,j)<b_(i+1,j), the resource index set is denoted with

$\left\lceil {\log\mspace{14mu} 2\begin{pmatrix}{TBN} \\{Lj}\end{pmatrix}} \right\rceil$bits, a value of the

$\left\lceil {\log\mspace{14mu} 2\begin{pmatrix}{TBN} \\{Lj}\end{pmatrix}} \right\rceil$bits is

${{abbi} = {\sum\limits_{i = 0}^{{Lj} - 1}\;\left\langle \begin{matrix}{{TBN} - b_{i}} \\{{Lj} - i}\end{matrix} \right\rangle}},$where

$\left\langle \begin{matrix}x \\y\end{matrix} \right\rangle = \left\{ {\begin{matrix}{\begin{pmatrix}x \\y\end{pmatrix},{x \geq y}} \\{0,{x < y}}\end{matrix},} \right.$TBN is a total number of resources in the candidate resource set,0≤j≤N−1, N is a number of first-type resource groups, Lj is a number ofresources in the j-th first-type resource group and

$\quad\begin{pmatrix}A \\B\end{pmatrix}$denotes a number of different combinations of selecting B numbers from Anumber.

In an alternative embodiment, N satisfies one of the followingcharacteristics: N is a first agreed value; and N is less than or equalto N_max, where N_max is a second agreed value.

In an alternative embodiment, the method further includes: feeding backa maximum number of simultaneously generatable different receivingresources corresponding to different first-type resource groups to thefirst communication node.

In an alternative embodiment, the resources in the candidate resourceset are used for at least one of: receiving and/or transmitting asynchronization signal; receiving and/or transmitting a data signal;receiving and/or transmitting a control signal; and receiving and/ortransmitting a pilot signal.

In an alternative embodiment, different first-type resource groupsinclude a same number of resources or different numbers of resources.

In an alternative embodiment, one of the following is included:resources in a same first-type resource group are not allowed to bespace division multiplexed and resources in different first-typeresource groups are allowed to be space division multiplexed; and theresources in the same first-type resource group are allowed to be spacedivision multiplexed and the resources in different first-type resourcegroups are not allowed to be space division multiplexed.

In an alternative embodiment, one of the following is included: amaximum number of space division multiplexing layers available toresources in a same first-type resource group is less than or equal to amaximum number of space division multiplexing layers available toresources in different first-type resource groups; the maximum number ofspace division multiplexing layers available to the resources in thesame first-type resource group is greater than or equal to the maximumnumber of space division multiplexing layers available to the resourcesin different first-type resource groups; the maximum number of spacedivision multiplexing layers available to the resources in the samefirst-type resource group is less than the maximum number of spacedivision multiplexing layers available to the resources in differentfirst-type resource groups; and the maximum number of space divisionmultiplexing layers available to the resources in the same first-typeresource group is greater than the maximum number of space divisionmultiplexing layers available to the resources in different first-typeresource groups.

In an alternative embodiment, one of the following is included:resources in a same first-type resource group support simultaneousreception; resources in different first-type resource groups do notsupport simultaneous reception; the resources in the same first-typeresource group support simultaneous reception and the resources indifferent first-type resource groups do not support simultaneousreception; and the resources in the same first-type resource groupsupport simultaneous reception and the resources in different first-typeresource groups support simultaneous reception.

In an alternative embodiment, one of the following is included:resources in different first-type resource groups support simultaneousreception; resources in a same first-type resource group do not supportsimultaneous reception; the resources in different first-type resourcegroups support simultaneous reception and the resources in the samefirst-type resource group do not support simultaneous reception; and theresources in different first-type resource groups support simultaneousreception and the resources in the same first-type resource groupsupport simultaneous reception.

In an alternative embodiment, at least one of the following is included:the N first-type resource groups are associated with a channelmeasurement related process; and the N first-type resource groups areassociated with a channel measurement related set.

In an alternative embodiment, the channel measurement related process isa channel state information (CSI) process; and the channel measurementrelated set includes at least one of a CSI reporting set (CSI reportingsettings), a resource set (Resource settings), a CSI measurement set(CSI measurement settings), a link set (link settings), and a referencesignal, RS, set (RS settings), where the CSI measurement set includesone or more links, each of which is used for establishing a relationshipbetween the resource set and the CSI reporting set.

Another embodiment of the present invention provides a method foracquiring grouping indication information. The method includes:acquiring second-type grouping indication information, where thesecond-type grouping indication information includes at least one of:information on a group index set, grouping manner indicationinformation, information on resources in a group, where the group indexset includes at least one group index.

In an alternative embodiment, the method further included: determining atransmission parameter and/or a reception parameter of a signalcorresponding to the second-type grouping indication informationaccording to the second-type grouping indication information.

In an alternative embodiment, the signal includes at least one of acontrol channel signal, a data channel signal and a reference signal.

In an alternative embodiment, the acquiring second-type groupingindication information includes at least one of the following: acquiringthe second-type grouping indication information according to a ruleagreed with a first communication node; receiving semi-static signalingand acquiring the second-type grouping indication information from thesemi-static signaling; receiving dynamic signaling and acquiring thesecond-type grouping indication information from the dynamic signaling;and receiving a system message and acquiring the second-type groupingindication information from the system message.

In an alternative embodiment, the determining a transmission parameterand/or a reception parameter of a signal corresponding to thesecond-type grouping indication information according to the second-typegrouping indication information includes: determining a correspondencepre-agreed with a first communication node, where the correspondence isa correspondence between the second-type grouping indication informationand the transmission parameter and/or the reception parameter; anddetermining the transmission parameter and/or the reception parameteraccording to the correspondence and the second-type grouping indicationinformation.

In an alternative embodiment, the correspondence between the second-typegrouping indication information and the transmission parameter and/orthe reception parameter is included in first-type grouping indicationinformation fed back to the first communication node.

In an alternative embodiment, the transmission parameter includes atleast one of: a modulation and coding scheme (MCS) set corresponding tothe signal, a multiplexing manner used by the signal, a length of acyclic prefix (CP) corresponding to the signal, a number of spacedivision multiplexing layers used by the signal, demodulation referencesignal port information used by the signal, quasi-co-located referencesignal resource information corresponding to the signal, structuralinformation corresponding to the signal, a channel characteristicreference signal corresponding to the signal and a transmission mannercorresponding to the signal; where the structural information includesat least one of: a CP length of a start symbol of a time unit,information indicating whether the start symbol of the time unitincludes a synchronization signal, and a CP length of a last symbol ofthe time unit; and/or the reception parameter includes a receivingresource for receiving the signal.

In an alternative embodiment, a grouping manner indicated by thesecond-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to each ofresources in a candidate resource set, grouping according to a channelquality corresponding to each of the resources in the candidate resourceset, grouping according to a predetermined multiplexing manner, groupingaccording to a timing advance (TA) parameter, grouping according to acyclic prefix (CP) length, grouping according to a space divisionmultiplexing manner, grouping according to a quasi-co-locationrelationship, grouping according to a transmitted measurement referencesignal, and grouping according to a channel characteristic.

In an alternative embodiment, the receiving resource includes at leastone of: a receiving beam, a receiving antenna, a receiving port, areceiving precoding matrix, receiving time, receiving frequency-domainresource, a receiving sector and a receiving sequence.

In an alternative embodiment, the information on the resources in thegroup includes resource information of a reference signal, where thereference signal includes at least one of: a demodulation referencesignal and a measurement reference signal.

In an alternative embodiment, resources in a same group have a samechannel characteristic and/or quasi-co-location information.

In an alternative embodiment, a correspondence exists between the atleast one group index and port information of a measurement referencesignal transmitted by a second communication node, where the secondcommunication node acquires the second-type grouping information.

Another embodiment of the present invention provides a signal receivingmethod. The method includes: acquiring third-type grouping indicationinformation; and receiving a demodulation reference signal and/or acontrol channel according to the third-type grouping indicationinformation.

In an alternative embodiment, the third-type grouping indicationinformation includes at least one of: the number of the groups,indication on resources in each group, information on a number ofresources in each group, grouping manner indication information andgroup index information.

In an alternative embodiment, the acquiring third-type groupingindication information includes at least one of the following: acquiringfeedback information according to a signal transmitted by a firstcommunication node, where the feedback information includes thethird-type grouping indication information; acquiring the third-typegrouping indication information according to a rule agreed with thefirst communication node; and receiving signaling information, where thesignaling information includes the third-type grouping indicationinformation.

In an alternative embodiment, the receiving a demodulation referencesignal and/or a control channel according to the third-type groupingindication information includes: receiving, according to the third-typegrouping indication information, the demodulation reference signaland/or the control channel on time division multiplexed N1 resources,where N1=x×N or N1 is less than or equal to N, where N1 is an integergreater than 0, N is a number of third-type groups included in thethird-type grouping indication information and x is an integer greaterthan or equal to 1.

In an alternative embodiment, the method includes: receiving thedemodulation reference signal and/or the control channel on the N1resources for transmitting the demodulation reference signal by using areceiving resource in a receiving resource set; and/or selecting one ormore receiving resources from the receiving resource set according to acertain rule, and receiving data and/or a control signal and/or areference signal subsequent to the demodulation reference signalaccording to the selected one or more receiving resources.

In an alternative embodiment, the method further includes: obtaining thereceiving resource set in at least one of the following manners: thereceiving resource set includes receiving resources corresponding to allgroups indicated by the third-type grouping indication information; thereceiving resource set includes receiving resources corresponding to N2group indexes agreed with a first communication node, where N2 is aninteger greater than or equal to 1; and the receiving resource set isdetermined by acquiring signaling indication information.

In an alternative embodiment, the receiving resource includes at leastone of: a receiving beam, a receiving antenna, a receiving port, areceiving precoding matrix, receiving time, receiving frequency-domainresource, a receiving sector and a receiving sequence.

In an alternative embodiment, before the receiving, according to thethird-type grouping indication information, the demodulation referencesignal and/or the control channel on time division multiplexed N1resources, the method further includes: acquiring x and/or N1. Theacquiring x and/or N1 includes at least one of the following: acquiringx and/or N1 in a manner agreed with a first communication node;acquiring x and/or N1 in a semi-static signaling configuration manner;and acquiring x and/or N1 in a dynamic signaling configuration manner.

In an alternative embodiment, the receiving a demodulation referencesignal and/or a control channel according to the third-type groupingindication information includes: receiving, according to the third-typegrouping indication information, the demodulation reference signaland/or the control channel on an agreed time unit, and receiving thedemodulation reference signal and/or the control channel on only onetime division multiplexed resource on a non-agreed time unit.

Another embodiment of the present invention provides a method forreceiving feedback information. The method includes: receiving thefeedback information from a second communication node, where thefeedback information includes indication information for indicating Mresources selected by the second communication node and first-typegrouping indication information for indicating that the secondcommunication node divides the M resources into N first-type resourcegroups; and performing resource scheduling and/or signal transmissionaccording to the feedback information; where both N and M are integers,N is less than or equal to M, and the M resources are selected from acandidate resource set.

In an alternative embodiment, before the receiving the feedbackinformation from a second communication node, the method furtherincludes at least one of the following: transmitting signalscorresponding to all or part of resources in the candidate resource setto the second communication node; and transmitting information fordetermining the first-type grouping indication information to the secondcommunication node, where the information includes at least one of:grouping restriction indication information, a parameter for determininga grouping rule, a threshold parameter for determining groups,configuration indication information of the candidate resource set andgrouping manner indication information.

In an alternative embodiment, a grouping manner indicated by thefirst-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to eachresource; grouping according to a channel quality corresponding to eachresource; grouping according to a predetermined multiplexing manner;grouping according to a timing advance (TA) parameter; groupingaccording to a cyclic prefix (CP) length; grouping according to a spacedivision multiplexing manner; and grouping according to aquasi-co-location relationship.

In an alternative embodiment, the grouping according to a predeterminedmultiplexing manner includes the grouping according to a space divisionmultiplexing manner. The receiving resource includes at least one of: areceiving beam, a receiving antenna, a receiving port, a receivingprecoding matrix, receiving time, receiving frequency-domain resource, areceiving sector and a receiving sequence.

In an alternative embodiment, the N first-type resource groups have atleast one of the following characteristics: a same first-type resourcegroup corresponds to a same timing advance (TA); different first-typeresource groups correspond to different TAs; resources in the samefirst-type resource group are allowed to be scheduled in a same timeunit; all or part of the resources in the same first-type resource groupare allowed to be scheduled in the same time unit; the differentfirst-type resource groups are scheduled in different time units and notschedulable in the same time unit;

a multiplexing manner set of the resources in the same first-typeresource group is a set A, and a multiplexing manner set of resources inthe different first-type resource groups is a set B, where the set B isa true subset of the set A or the set A is a true subset of the set B;the resources in the same first-type resource group are not allowed tobe space division multiplexed in the same time unit, the resources inthe different first-type resource groups are allowed to be spacedivision multiplexed in the same time unit, where a number of spacedivision multiplexing layers is less than or equal to a number offirst-type resource groups; a first cyclic prefix (CP) length is adoptedwhen the resources in the same first-type resource group aresimultaneously scheduled in the same time unit or switched betweendifferent time units; a second CP length is adopted when the resourcesin the different first-type resource groups are scheduled in the sametime unit; when scheduled resources switch between the differentfirst-type resource groups or combination of first-type resource groups,a switching start orthogonal frequency division multiplexing (OFDM)symbol uses a third CP length, and/or a switching start position has asynchronization signal used for a reception timing of the secondcommunication node, and/or a last OFDM symbol before switching uses thethird CP length; and the same first-type resource group has a samequasi-co-location and all the resources in the same first-type resourcegroup share a quasi-co-located reference signal.

In an alternative embodiment, at least one of the following is included:resources in a same first-type resource group are allowed to be spacedivision multiplexed in a same time unit, where a number of spacedivision multiplexing layers is less than or equal to a number ofresources in each of the N first-type resource groups; and resources indifferent first-type resource groups are not allowed to be spacedivision multiplexed in the same time unit; and cyclic prefix (CP)lengths corresponding to the resources in different first-type resourcegroups scheduled in the same time unit is obtained according todifferences of resource group indexes of the different first-typeresource groups where the resources are located.

In an alternative embodiment, the third CP length is greater than thefirst CP length and the second CP length.

In an alternative embodiment, one of the following is included:resources in a same first-type resource group are not space divisionmultiplexed and resources in different first-type resource groups arespace division multiplexed; and the resources in the same first-typeresource group are space division multiplexed and the resources indifferent first-type resource groups are not space division multiplexed.

In an alternative embodiment, one of the following is included: amaximum number of space division multiplexing layers available toresources in a same first-type resource group is less than or equal to amaximum number of space division multiplexing layers available toresources in different first-type resource groups; the maximum number ofspace division multiplexing layers available to the resources in thesame first-type resource group is greater than or equal to the maximumnumber of space division multiplexing layers available to the resourcesin different first-type resource groups; the maximum number of spacedivision multiplexing layers available to the resources in the samefirst-type resource group is less than the maximum number of spacedivision multiplexing layers available to the resources in differentfirst-type resource groups; and the maximum number of space divisionmultiplexing layers available to the resources in the same first-typeresource group is greater than the maximum number of space divisionmultiplexing layers available to the resources in different first-typeresource groups.

In an alternative embodiment, the method further include: agreeing withthe second communication node on one of the following: the secondcommunication node is capable of simultaneously receiving resources in asame first-type resource group; the second communication node isincapable of simultaneously receiving resources in different first-typeresource groups; the second communication node is capable ofsimultaneously receiving the resources in the same first-type resourcegroup and the second communication node is incapable of simultaneouslyreceiving the resources in different first-type resource groups; and thesecond communication node is capable of simultaneously receiving theresources in the same first-type resource group and the secondcommunication node is capable of simultaneously receiving the resourcesin different first-type resource groups.

In an alternative embodiment, the method further include: agreeing withthe second communication node on one of the following: the secondcommunication node is capable of simultaneously receiving resources indifferent first-type resource groups; the second communication node isincapable of simultaneously receiving resources in a same first-typeresource group; the second communication node is capable ofsimultaneously receiving the resources in different first-type resourcegroups and the second communication node is incapable of simultaneouslyreceiving the resources in the same first-type resource group; and thesecond communication node is capable of simultaneously receiving theresources in different first-type resource groups and the secondcommunication node is capable of simultaneously receiving the resourcesin the same first-type resource group.

In an alternative embodiment, at least one of the following is included:the N first-type resource groups are associated with a channelmeasurement related process; and the N first-type resource groups areassociated with a channel measurement related set.

In an alternative embodiment, the channel measurement related process isa channel state information (CSI) process; and the channel measurementrelated set includes at least one of a CSI reporting set (CSI reportingsettings), a resource set (Resource settings), a CSI measurement set(CSI measurement settings), a link set (link settings), and a referencesignal, RS, set (RS settings), where the CSI measurement set includesone or more links, each of which is used for establishing a relationshipbetween the resource set and the CSI reporting set.

Another embodiment of the present invention provides a method fornotifying grouping indication information. The method includes:determining second-type grouping indication information; and notifying asecond communication node of the second-type grouping indicationinformation, where the second-type grouping indication informationincludes at least one of: information on a group index set, groupingmanner indication information, information on resources in a group,where the group index set includes at least one group index.

In an alternative embodiment, the notifying a second communication nodeof the second-type grouping indication information includes at least oneof the following: agreeing with the second communication node on thesecond-type grouping indication information; transmitting thesecond-type grouping indication information to the second communicationnode by semi-static signaling; transmitting the second-type groupingindication information to the second communication node by dynamicsignaling; and transmitting the second-type grouping indicationinformation to the second communication node through a system message.

In an alternative embodiment, at least one of the following is included:the second-type grouping indication information is used by the secondcommunication node to determine a transmission parameter and/or areception parameter of a signal corresponding to the second-typegrouping indication information; the transmission parameter includes atleast one of: an MCS set corresponding to the signal, a multiplexingmanner used by the signal, a length of a cyclic prefix (CP)corresponding to the signal, a number of space division multiplexinglayers used by the signal, demodulation reference signal portinformation used by the signal, quasi-co-located reference signalresource information corresponding to the signal, structural informationcorresponding to the signal, a channel characteristic reference signalcorresponding to the signal and a transmission manner of the signal;where the structural information includes at least one of: a CP lengthof a start symbol of a time unit, information indicating whether thestart symbol of the time unit includes a synchronization signal, and aCP length of a last symbol of the time unit; and the reception parameterincludes a receiving resource for receiving the signal.

In an alternative embodiment, the signal includes at least one of acontrol channel signal, a data channel signal and a reference signal.

In an alternative embodiment, before transmitting the second-typegrouping indication information to the second communication node, themethod further includes: determining a correspondence between thesecond-type grouping indication information and a parameter, where theparameter includes the transmission parameter and/or the receptionparameter.

In an alternative embodiment, the determining a correspondence betweenthe second-type grouping indication information and a parameter includesat least one of the following: determining the correspondence betweenthe second-type grouping indication information and the parameter in anagreed manner with the second communication node; determining thecorrespondence between the second-type grouping indication informationand the parameter by receiving first-type grouping indicationinformation fed back by the second communication node; and transmittingthe correspondence to the second communication node.

In an alternative embodiment, the determining the correspondence betweenthe second-type grouping indication information and the parameter in anagreed manner with the second communication node includes: obtaining thecorrespondence between the second-type grouping indication informationand the parameter according to a measurement reference signaltransmitted by the second communication node.

In an alternative embodiment, the first-type grouping indicationinformation includes at least one of: the number of the groups,indication on the resources in each group, information on a number ofresources in each group, grouping manner indication information, groupindex information and information on a common parameter corresponding toeach group.

In an alternative embodiment, the common parameter corresponding to eachgroup includes at least one of the following parameters: a CP lengthcorresponding to each group, a precoding matrix indicator (PMI)corresponding to each group, a rank indicator (RI) corresponding to eachgroup, a channel quality indication (CQI) corresponding to each group, atiming advance (TA) parameter corresponding to each group, aquasi-co-location parameter corresponding to each group, and a receivingresource corresponding to each group.

In an alternative embodiment, a grouping manner indicated by thesecond-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to atransmission resource, grouping according to a channel qualitycorresponding to the transmission resource, grouping according to apredetermined multiplexing manner, grouping according to a timingadvance (TA) parameter, grouping according to a cyclic prefix (CP)length, grouping according to a space division multiplexing manner,grouping according to a quasi-co-location relationship, groupingaccording to a measurement reference signal transmitted by the secondcommunication node, and grouping according to a channel characteristic.The transmission resource includes at least one of: a transmission beamresource, a transmission antenna resource, a transmission port resource,a transmission frequency domain resource, a transmission sequenceresource and a transmission time domain resource.

In an alternative embodiment, the receiving resource includes at leastone of: a receiving beam, a receiving antenna, a receiving port, areceiving precoding matrix, receiving time, receiving frequency-domainresource, a receiving sector and a receiving sequence.

In an alternative embodiment, the information on the resources in thegroup includes resource information of a reference signal, where thereference signal includes at least one of: a demodulation referencesignal and a measurement reference signal.

In an alternative embodiment, resources in a same group have a samechannel characteristic and/or quasi-co-location information.

In an alternative embodiment, a correspondence exists between the atleast one group index and port information of a measurement referencesignal transmitted by the second communication node.

Another embodiment of the present invention provides a signaltransmission method. The method includes: determining third-typegrouping indication information; and transmitting a demodulationreference signal and/or a control channel according to the third-typegrouping indication information.

In an alternative embodiment, the third-type grouping indicationinformation includes at least one of: the number of the groups,indication on resources in each group, information on a number ofresources in each group, grouping manner indication information andgroup index information.

In an alternative embodiment, the determining third-type groupingindication information includes at least one of the following:determining the third-type grouping indication information according tofirst-type grouping indication information received from a secondcommunication node; and determining the third-type grouping indicationinformation according to a rule agreed with the second communicationnode.

In an alternative embodiment, the transmitting a demodulation referencesignal and/or a control channel according to the third-type groupingindication information includes: transmitting, according to thethird-type grouping indication information, the demodulation referencesignal and/or the control channel on time division multiplexed N1resources, where N1=x×N or N1 is less than or equal to N, where N1 is aninteger greater than 0, N is a number of groups and x is an integergreater than or equal to 1.

In an alternative embodiment, before the transmitting a demodulationreference signal and/or a control channel according to the third-typegrouping indication information, the method further includes: notifyinga second communication node of x and/or N1.

In an alternative embodiment, the notifying a second communication nodeof x and/or N1 includes at least one of the following: notifying thesecond communication node of x and/or N1 in an agreed manner with thesecond communication node; notifying the second communication node of xand/or N1 by semi-static signaling; and notifying the secondcommunication node of x and/or N1 by dynamic signaling.

In an alternative embodiment, the demodulation reference signal istransmitted on the N1 resources in a same transmission manner, where atransmission manner of the demodulation reference signal includes atleast one of: a transmission beam, a transmission port, a transmissionantenna, a transmission precoding matrix and a transmission frequencydomain resource.

In an alternative embodiment, the demodulation reference signal and/orthe control channel transmitted on the N1 resources have a sametransmission manner as data and/or a control signal and/or a referencesignal transmitted subsequent to the demodulation reference signaland/or the control channel, where a transmission manner of thedemodulation reference signal includes at least one of: a transmissionbeam, a transmission port, a transmission antenna, a transmissionprecoding matrix and a transmission frequency domain resource.

In an alternative embodiment, the transmitting a demodulation referencesignal and/or a control channel according to the third-type groupingindication information includes: transmitting, according to thethird-type grouping indication information, the demodulation referencesignal and/or the control channel on an agreed time unit, andtransmitting the demodulation reference signal and/or the controlchannel on only one time division multiplexed resource on a non-agreedtime unit.

Another embodiment of the present invention provides a device forfeeding back grouping indication information. The device includes afirst determining module and a first transmitting module. The firstdetermining module is configured to determine M resources from acandidate resource set and divide the M resources into N first-typeresource groups, where M is an integer greater than or equal to 1 and Nis a positive integer less than or equal to M. The first transmittingmodule is configured to feed back indication information for indicatingthe M resources and first-type grouping indication information forindicating that the M resources are divided into the N first-typeresource groups to a first communication node. Resources in thecandidate resource set include at least one of: a transmission beamresource, a transmission antenna resource, a transmission port resource,a transmission frequency domain resource, a transmission sequenceresource and a transmission time domain resource.

In an alternative embodiment, the first determining module determinesthe M resources from the candidate resource set in the followingmanners: determining the candidate resource set, where the candidateresource set includes Q second-type resource groups, where Q is aninteger greater than or equal to 1; receiving a transmission signaltransmitted on the candidate resource set; and determining the Mresources from the candidate resource set according to the receivedtransmission signal.

In an alternative embodiment, the first determining module divides the Mresources into the N first-type resource groups in at least one of thefollowing manners: dividing the M resources into the N first-typeresource groups according to receiving resources corresponding to the Mresources;

dividing the M resources into the N first-type resource groups accordingto a signal quality on each of the M resources or a channel qualitycorresponding to the each of the M resources; dividing the M resourcesinto the N first-type resource groups according to a predeterminedmultiplexing manner; dividing the M resources into the N first-typeresource groups according to a timing advance (TA) parameter; dividingthe M resources into the N first-type resource groups according to alength of a cyclic prefix (CP); dividing the M resources into the Nfirst-type resource groups according to a quasi-co-locationrelationship; dividing the M resources into the N first-type resourcegroups according to grouping configuration information; and dividing theM resources into the N first-type resource groups according to a channelcharacteristic.

In an alternative embodiment, the first determining module divides the Mresources into the N first-type resource groups according to thepredetermined multiplexing manner in the following manner: dividing theM resources into the N first-type resource groups according to a spacedivision multiplexing manner, where resources not supporting spacedivision multiplexing are grouped into a same first-type resource group,resources supporting the space division multiplexing are grouped intodifferent first-type resource groups, and a number of first-typeresource groups is greater than or equal to a maximum number of spacedivision multiplexing layers; or the resources supporting the spacedivision multiplexing are grouped into a same first-type resource group,the resources not supporting the space division multiplexing are groupedinto different first-type resource groups, and a number of spacedivision multiplexing layers of the resources in the same first-typeresource group is less than or equal to a number of resources in thesame first-type resource group.

Another embodiment of the present invention provides a device foracquiring grouping indication information. The device includes a firstacquisition module. The first acquisition module is configured toacquire second-type grouping indication information. The second-typegrouping indication information includes at least one of: information ona group index set, grouping manner indication information, informationon resources in a group, where the group index set includes at least onegroup index.

In an alternative embodiment, the device further includes a firstprocessing module. The first processing module is configured todetermine a transmission parameter and/or a reception parameter of asignal corresponding to the second-type grouping indication informationaccording to the second-type grouping indication information.

In an alternative embodiment, the first processing module determines thetransmission parameter and/or the reception parameter of the signalcorresponding to the second-type grouping indication information in thefollowing manners: determining a correspondence pre-agreed with a firstcommunication node, where the correspondence is a correspondence betweenthe second-type grouping indication information and the transmissionparameter and/or the reception parameter; and determining thetransmission parameter and/or the reception parameter according to thecorrespondence and the second-type grouping indication information.

In an alternative embodiment, the correspondence between the second-typegrouping indication information and the transmission parameter and/orthe reception parameter is included in first-type grouping indicationinformation fed back to the first communication node.

Another embodiment of the present invention provides a signal receivingdevice. The device includes a second acquisition module and a firstreceiving module. The second acquisition module is configured to acquirethird-type grouping indication information. The first receiving moduleis configured to receive a demodulation reference signal and/or acontrol channel according to the third-type grouping indicationinformation.

In an alternative embodiment, the third-type grouping indicationinformation includes at least one of: the number of the groups,indication on resources in each group, information on a number ofresources in each group, grouping manner indication information andgroup index information.

In an alternative embodiment, the second acquisition module acquires thethird-type grouping indication information in at least one of thefollowing manners: acquiring feedback information according to a signaltransmitted by a first communication node, where the feedbackinformation includes the third-type grouping indication information;acquiring the third-type grouping indication information according to arule agreed with the first communication node; and receiving signalinginformation, where the signaling information includes the third-typegrouping indication information.

In an alternative embodiment, the first receiving module receives thedemodulation reference signal and/or the control channel in thefollowing manner: receiving, according to the third-type groupingindication information, the demodulation reference signal and/or thecontrol channel on time division multiplexed N1 resources, where N1=x×Nor N1 is less than or equal to N, where N1 is an integer greater than 0,N is a number of third-type groups included in the third-type groupingindication information and x is an integer greater than or equal to 1.

Another embodiment of the present invention provides a device forreceiving feedback information. The device includes a second receivingmodule and a second transmitting module. The second receiving module isconfigured to receive the feedback information from a secondcommunication node. The feedback information includes indicationinformation for indicating M resources selected by the secondcommunication node and first-type grouping indication information forindicating that the second communication node divides the M resourcesinto N first-type resource groups. The second transmitting module isconfigured to perform resource scheduling and/or signal transmissionaccording to the feedback information; where both N and M are integers,N is less than or equal to M, and the M resources are selected from acandidate resource set.

In an alternative embodiment, a grouping manner indicated by thefirst-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to eachresource; grouping according to a channel quality corresponding to eachresource; grouping according to a predetermined multiplexing manner;grouping according to a timing advance (TA) parameter; groupingaccording to a cyclic prefix (CP) length; grouping according to a spacedivision multiplexing manner; and grouping according to aquasi-co-location relationship.

Another embodiment of the present invention provides a device fornotifying grouping indication information. The device includes a seconddetermining module and a third transmitting module. The seconddetermining module is configured to determine second-type groupingindication information. The third transmitting module is configured tonotify a second communication node of the second-type groupingindication information. The second-type grouping indication informationincludes at least one of: information on a group index set, groupingmanner indication information, information on resources in a group,where the group index set includes at least one group index.

In an alternative embodiment, the third transmitting module notifies thesecond communication node of the second-type grouping indicationinformation in at least one of the following manners: agreeing with thesecond communication node on the second-type grouping indicationinformation; transmitting the second-type grouping indicationinformation to the second communication node by semi-static signaling;transmitting the second-type grouping indication information to thesecond communication node by dynamic signaling; and transmitting thesecond-type grouping indication information to the second communicationnode through a system message.

Another embodiment of the present invention provides a signaltransmission device. The device includes a third determining module anda fourth transmitting module. The third determining module is configuredto determine third-type grouping indication information. The fourthtransmitting module is configured to transmit a demodulation referencesignal and/or a control channel according to the third-type groupingindication information.

In an alternative embodiment, the third-type grouping indicationinformation includes at least one of: the number of the groups,indication on resources in each group, information on a number ofresources in each group, grouping manner indication information andgroup index information.

Another embodiment of the present invention provides a storage medium.The storage medium is configured to store program codes for executingone of the steps or a combination of the steps in the method embodimentsdescribed above.

In the present invention, a receiving end groups transmission resourcesand feeds back the information to a transmitting end, the resources inthe same group have certain common characteristics, and the resources indifferent groups have different characteristics. With a limited feedbackinformation, more information is provided to the transmitting end, sothat the transmitting end has the improved scheduling flexibility andcan reasonably and effectively manage the resources. Therefore, thepresent invention may solve the problem in the existing art that thetransmission beams cannot be reasonably and flexibility managed andscheduled, and achieve flexibly managing and scheduling the transmissionbeams.

BRIEF DESCRIPTION OF DRAWINGS

The drawings described herein are used to provide a furtherunderstanding of the present invention and form a part of the presentapplication. The exemplary embodiments and descriptions thereof in thepresent invention are used to explain the present invention and not tolimit the present invention in any improper way. In the drawings:

FIG. 1 is a block diagram of a hardware configuration of a mobileterminal for receiving a signal according to an embodiment of thepresent invention;

FIG. 2 is a flowchart of a method for feeding back grouping indicationinformation according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for acquiring grouping indicationinformation according to an embodiment of the present invention;

FIG. 4 is a flowchart of a signal receiving method according to anembodiment of the present invention;

FIG. 5 is a flowchart of a method for receiving feedback informationaccording to an embodiment of the present invention;

FIG. 6 is a flowchart of a method for notifying grouping indicationinformation according to an embodiment of the present invention;

FIG. 7 is a flowchart of a signaling transmission method according to anembodiment of the present invention;

FIG. 8 is a diagram illustrating a hybrid beamforming example accordingto an embodiment of the present invention;

FIG. 9 is a diagram illustrating an example 1 of a second-type resourcegroup according to an embodiment of the present invention;

FIG. 10 is a diagram illustrating an example 2 of a second-type resourcegroup according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating an example 3 of a second-type resourcegroup according to an embodiment of the present invention;

FIG. 12 is a diagram illustrating an example 4 of a second-type resourcegroup according to an embodiment of the present invention;

FIG. 13 is a diagram illustrating an example 5 of a second-type resourcegroup according to an embodiment of the present invention;

FIG. 14 is a diagram illustrating an example 1 of a grouping manner offirst-type resource groups according to an embodiment of the presentinvention;

FIG. 15a is a diagram illustrating an example 1 of a grouping manner andreceiving resources of first-type resource groups according to anembodiment of the present invention;

FIG. 15b is a diagram illustrating an example 2 of a grouping manner andreceiving resources of first-type resource groups according to anembodiment of the present invention;

FIG. 16a is a schematic diagram illustrating that transmission beams ina same group are freely switched in a transmission phase after feedbackaccording to an embodiment of the present invention;

FIG. 16b is a schematic diagram illustrating that combinations oftransmission beams in a same group are freely switched in a transmissionphase after feedback according to an embodiment of the presentinvention;

FIG. 17 is a diagram illustrating that transmission manners of differentresources in a candidate resource set according to an embodiment of thepresent invention;

FIG. 18a is a diagram illustrating an example 1 in which subbands with asame receiving manner are divided into a same first-type resource groupaccording to an embodiment of the present invention;

FIG. 18b is a diagram illustrating an example 2 in which subbands with asame receiving manner are divided into a same first-type resource groupaccording to an embodiment of the present invention;

FIG. 18c is a diagram illustrating an example in which subbands in asane group are freely scheduled and subbands in different groups are notsimultaneously schedulable in a transmission phase after feedbackaccording to an embodiment of the present invention;

FIG. 19 is a diagram illustrating an example 1 of first-type resourcegroups according to an embodiment of the present invention;

FIG. 20 is a diagram illustrating an example 2 of first-type resourcegroups according to an embodiment of the present invention;

FIG. 21 is a diagram illustrating an example 3 of first-type resourcegroups according to an embodiment of the present invention;

FIG. 22a is a diagram illustrating that first-type resource groups aredivided according to TA information according to an embodiment of thepresent invention;

FIG. 22b is a diagram illustrating that first-type resource groups aredivided according to CP information according to an embodiment of thepresent invention;

FIG. 22c is a diagram illustrating an example 1 in which different CPsare used according to grouping information of resources in atransmission phase after feedback according to an embodiment of thepresent invention;

FIG. 22d is a diagram illustrating an example 2 in which different CPsare used according to grouping information of resources in atransmission phase after feedback according to an embodiment of thepresent invention;

FIG. 22e is a diagram illustrating an example 3 in which different CPsare used according to grouping information of resources in atransmission phase after feedback according to an embodiment of thepresent invention;

FIG. 22f is a diagram illustrating an example 4 in which different CPsare used according to grouping information of resources in atransmission phase after feedback according to an embodiment of thepresent invention;

FIG. 22g is a diagram illustrating an example 5 in which different CPsare used according to grouping information of resources in atransmission phase after feedback according to an embodiment of thepresent invention;

FIG. 22h is a diagram illustrating an example in which long CPs are usedat beginning and end of a time unit according to an embodiment of thepresent invention;

FIG. 23a is a diagram illustrating an example 1 in which a referencesignal is transmitted according to a number of third-type resourcegroups according to an embodiment of the present invention;

FIG. 23b is a diagram illustrating an example 2 in which a referencesignal is transmitted according to a number of third-type resourcegroups according to an embodiment of the present invention;

FIG. 23c is a diagram illustrating an example 3 in which a referencesignal is transmitted according to a number of third-type resourcegroups according to an embodiment of the present invention;

FIG. 23d is a diagram illustrating an example 1 in which a referencesignal and control information are transmitted according to a number ofthird-type resource groups according to an embodiment of the presentinvention;

FIG. 23e is a diagram illustrating an example e in which a referencesignal and control information are transmitted according to a number ofthird-type resource groups according to an embodiment of the presentinvention;

FIG. 24a is a diagram illustrating an example 4 of first-type resourcegroups according to an embodiment of the present invention;

FIG. 24b is a diagram illustrating an example 5 of first-type resourcegroups according to an embodiment of the present invention;

FIG. 24c is a diagram illustrating an example 6 of first-type resourcegroups according to an embodiment of the present invention;

FIG. 24d is a schematic diagram illustrating a signaling notificationmanner of second-type grouping indication information according to anembodiment of the present invention;

FIG. 24e is a diagram illustrating a mapping relationship between anumber of first-type resource groups and feedback resources fortransmitting first-type grouping indication information according to anembodiment of the present invention;

FIG. 24f is a diagram illustrating an example 1 in which a receivingresource or a receiving manner is a time domain resource according to anembodiment of the present invention;

FIG. 24g is a diagram illustrating an example 2 in which a receivingresource or a receiving manner is a time domain resource according to anembodiment of the present invention;

FIG. 25 is a block diagram of a device for feeding back first-typegrouping indication information according to an embodiment of thepresent invention;

FIG. 26 is a block diagram of a device for acquiring second-typegrouping indication information according to an embodiment of thepresent invention;

FIG. 27 is a block diagram of a signal receiving device according to anembodiment of the present invention;

FIG. 28 is a block diagram of a device for receiving feedbackinformation according to an embodiment of the present invention;

FIG. 29 a block diagram of a device for notifying second-type groupingindication information according to an embodiment of the presentinvention; and

FIG. 30 is a block diagram of a signal transmission device according toan embodiment of the present invention.

DETAILED DESCRIPTION

Hereinafter the present invention will be described in detail withreference to the drawings in conjunction with embodiments. It is to benoted that if not in collision, the embodiments and features therein inthe present application may be combined with each other.

It is to be noted that the terms “first”, “second” and the like in thedescription, claims and drawings of the present invention are used todistinguish between similar objects and are not necessarily used todescribe a particular order or sequence.

Method embodiments provided by the present application may be executedin a mobile terminal, a computer terminal or other similar computingdevices. Taking the method embodiments to be executed in the mobileterminal as an example, FIG. 1 is a block diagram of hardware of amobile terminal for receiving a signal (or a mobile terminal foracquiring a signal parameter) according to an embodiment of the presentinvention. As shown in FIG. 1, a mobile terminal 10 may include one ormore (only one processor is shown in FIG. 1) processors 102 (theprocessors 102 may include, but are not limited to, a processing devicesuch as a microcontroller unit (MCU) and a field programmable gate array(FPGA)), a memory 104 for storing data and a transmission device 106 fora communication function. It should be understood by those skilled inthe art that the structure shown in FIG. 1 is merely illustrative andnot intended to limit the structure of the electronic device describedabove. For example, the mobile terminal 10 may further include more orfewer components than the components shown in FIG. 1 or may have aconfiguration different from the configuration shown in FIG. 1.

The memory 104 may be used for storing software programs and modules ofapplication software, such as program instructions/modules correspondingto the signal receiving method in the embodiments of the presentinvention. The processor 102 executes the software programs and modulesstored in the memory 104 so as to perform various function applicationsand data processing, that is, to implement the method described above.The memory 104 may include a high-speed random access memory, and mayfurther include a nonvolatile memory, such as one or more magneticstorage devices, flash memories or other nonvolatile solid-statememories. In some examples, the memory 104 may further include memoriesthat are remotely disposed with respect to the processor 102. Theseremote memories may be connected to the mobile terminal 10 via anetwork. Examples of the network described above include, but are notlimited to, the Internet, an intranet, a local area network, a mobilecommunication network and a combination thereof.

The transmission device 106 is configured to receive and transmit datavia a network. Specific examples of the network described above mayinclude a wireless network provided by a communication provider of themobile terminal 10. In one example, the transmission device 106 includesa network interface controller (NIC), which may be connected to othernetwork devices via a base station, thereby communicating with theInternet. In one example, the transmission device 106 may be a radiofrequency (RF) module, which is configured to communicate with theInternet wirelessly.

A method for feeding back grouping indication information is provided inthe embodiment. FIG. 2 is a flowchart of a method for feeding backgrouping indication information according to an embodiment of thepresent invention. As shown in FIG. 2, the method includes the stepsdescribed below.

In step S202, M resources are determined from a candidate resource setand divided into N first-type resource groups, where M is an integergreater than or equal to 1 and N is a positive integer less than orequal to M.

In step S204, indication information for indicating the M resources andfirst-type grouping indication information for indicating that the Mresources are divided into the N first-type resource groups are fed backto a first communication node.

Resources in the candidate resource set include at least one of: atransmission beam resource, a transmission antenna resource, atransmission port resource, a transmission frequency domain resource, atransmission sequence resource and a transmission time domain resource.

The above operations may be performed by a second communication node(such as a user equipment (UE) which may be referred to as a terminal).The first communication node may be a base station.

In the above steps, transmission resources may be grouped and thegrouping information is fed back to the first communication node,resources in a same group have certain common characteristics, andresources in different groups have different characteristics. In thisway, with limited feedback information, more information is provided tothe transmitting end, so that the first communication node has improvedscheduling flexibility and can reasonably and effectively manage theresources. Therefore, the method may solve the problem in the existingart that the transmission beams and/or receiving beams cannot bereasonably and flexibly managed and scheduled, and achieve an effect offlexibly managing and scheduling the transmission beams and/or thereceiving beams.

In an alternative embodiment, the second communication node maydetermine the M resources from the candidate resource set through thesteps described below. The candidate resource set is determined, wherethe candidate resource set includes Q second-type resource groups, whereQ is an integer greater than or equal to 1. A transmission signaltransmitted on the candidate resource set is received. The M resourcesare determined from the candidate resource set according to the receivedtransmission signal.

In an alternative embodiment, the Q second-type resource groups in thecandidate resource set are divided according to at least one of thefollowing resource types: a beam resource, an antenna resource, a portresource, a frequency domain resource, a transmission sequence resourceand a time domain resource. In the embodiment, different beam resourcesmay be divided into different second-type resource groups; differentport resources may be divided into different second-type resourcegroups; or different time/frequency resources may be divided intodifferent second-type resource groups; different sequence resources maybe divided into different second-type resource groups; different beamand port resources may be divided into different second-type resourcegroups; or different beam and time/frequency resources may be dividedinto different second-type resource groups. Optionally, the aboveresources are used for at least one of: receiving/transmitting asynchronization signal, receiving/transmitting a data signal,receiving/transmitting a control signal and receiving/transmitting apilot signal.

In an alternative embodiment, the step in which the M resources aredetermined from the candidate resource set includes determining the Mresources from the candidate resource set according to a channel qualityand/or a signal quality of each resource in the candidate resource set.

In an alternative embodiment, resources in a same first-type resourcegroup belong to one or more second-type resource groups of the Qsecond-type resource groups. For example, one Channel StateInformation-Reference Signal (CSI-RS) resource corresponds to onesecond-type resource group and multiple ports in the one CSI-RS resourcecorrespond to resources included in the one second-type resource group,and the resources in the same first-type resource group may be composedof ports in one or more CSI-RS resources. Preferably, different CSI-RSresources correspond to different transmission nodes and different portsin a same CSI-RS resource may correspond to different transmission beamsof the transmission node. Resources in a same second-type resource groupbelong to one or more of the N first-type resource groups. For example,transmission beams {1, 2, 3, 4, 5} constitute the candidate resourceset, each transmission beam is one second-type resource group. When thetransmission beams are divided into two first-type resource groups,transmission beams {1, 2, 3} may be one first-type resource group andtransmission beams {1, 4, 5} may be the other first-type resource group.In this case, the transmission beam 1 may correspond to multiplefirst-type resource groups. An intersection set of different resourcegroups among the N first-type resource groups is not an empty set.

In an alternative embodiment, the M resources are divided into the Nfirst-type resource groups in at least one of the following manners:dividing the M resources into the N first-type resource groups accordingto receiving resources corresponding to the M resources; dividing the Mresources into the N first-type resource groups according to a signalquality on each of the M resources or a channel quality corresponding tothe each of the M resources; dividing the M resources into the Nfirst-type resource groups according to a predetermined multiplexingmanner; dividing the M resources into the N first-type resource groupsaccording to a timing advance (TA) parameter; dividing the M resourcesinto the N first-type resource groups according to a length of a cyclicprefix (CP); dividing the M resources into the N first-type resourcegroups according to a quasi-co-location relationship; dividing the Mresources into the N first-type resource groups according to groupingconfiguration information; and dividing the M resources into the Nfirst-type resource groups according to a channel characteristic (whichmay also be referred to as a quasi-co-beam or a quasi-co-channel oranother equivalent noun). In the embodiment, the predeterminedmultiplexing manner may include a recommended multiplexing manner, mayalso include a general multiplexing manner, and may also include a spacemultiplexing manner.

In an alternative embodiment, the step of dividing the M resources intothe N first-type resource groups according to the predeterminedmultiplexing manner includes dividing the M resources into the Nfirst-type resource groups according to the space division multiplexingmanner. Resources not supporting space division multiplexing are groupedinto a same first-type resource group, resources supporting the spacedivision multiplexing are grouped into different first-type resourcegroups, and a number of first-type resource groups is greater than orequal to a maximum number of space division multiplexing layers.Alternatively, the resources supporting the space division multiplexingare grouped into a same first-type resource group, the resources notsupporting the space division multiplexing are grouped into differentfirst-type resource groups, and a number of space division multiplexinglayers of the resources in the same first-type resource group is lessthan or equal to a number of resources in the same first-type resourcegroup. In the embodiment, two resources supporting space divisionmultiplexing means that the two resources support multi-streamtransmission, and different resources transmit different datainformation. Alternatively, two resources supporting space divisionmultiplexing means that the two resources have a low channel responsecorrelation. The two resources may be used for transmitting same data toincrease data robustness (if the data transmission on one resourcefails, the same data may be transmitted correctly on a channel of theother resource). Alternatively, the two resources may be used fortransmitting different data to increase a channel capacity. In asubsequent transmission phase in which resources supporting the spacedivision multiplexing are used, the first communication node maytransmit data to the second communication node using different resourcesin the space division multiplexing manner. In a subsequent transmissionphase in which resources not supporting the space division multiplexingare not used, the first communication node may not transmit data to thesecond communication node using different resources in the spacedivision multiplexing manner. However, when the first communication nodetransmits information to the second communication node and one or morethird communication nodes by using the different resources, there are nosuch limitations.

In an alternative embodiment, the method includes at least one of thecharacteristics described below. Resources in a same first-type resourcegroup have same one or more types of receiving resources, or one or moretypes of receiving resources corresponding to the resources have adifference less than a predetermined threshold (the difference of thereceiving resources indicates that the receiving resources are differentand have overlapping, or for example, a distance between the receivingresources such as a distance between vectors of receiving weights isless than the threshold) (for example, a correlation between receivingsequences is less than an agreed threshold and/or a correlation betweenreceiving beams is less than the agreed threshold). The receivingresources include at least one of: a receiving antenna resource, areceiving port resource, a receiving weight resource, a receiving sectorresource, a receiving sequence resource, a receiving time domainresource, a receiving frequency domain resource and a receiving beamresource (all receiving resources involved in the present invention mayinclude at least one of the resource types above). Channel qualitiescorresponding to the resources in the same first-type resource grouphave a difference less than or equal to a threshold R1 (the different ofthe channel qualities denotes an absolute value of a difference ofmeasurement values of channel qualities corresponding to differentresources), and channel qualities corresponding to resources indifferent first-type resource groups have a difference greater than athreshold R2, where R1 or R2 is pre-agreed with the first communicationnode (R1 or R2 may be pre-agreed by the first communication node and thesecond communication node) or configured by signaling from the firstcommunication node (R1 and R2 may be the same). Receiving signalqualities corresponding to the resources in the same first-type resourcegroup have a difference less than or equal to a threshold r1 (thedifferent of the receiving signal qualities denotes an absolute value ofa difference of measurement values of receiving signal qualitiescorresponding to different resources), and receiving signal qualitiescorresponding to the resources in different first-type resource groupshave a difference greater than a threshold r2, where r1 or r2 ispre-agreed with the first communication node or configured by signalingfrom the first communication node (r1 and r2 may be the same). Amultiplexing manner set used for transmitting signals on the resourcesin the same first-type resource group is a set A, and a multiplexingmanner set used for transmitting the signals on the resources indifferent first-type resource groups is a set B, where the set B is atrue subset of the set A or the set A is a true subset of the set B (theset A and the set B are different sets). TA parameters used fortransmitting the signal on the resources in the same first-type resourcegroup have a difference less than or equal to a threshold T1, and TAparameters used for transmitting the signal on the resources indifferent first-type resource groups have a difference greater than athreshold T2, where T1 or T2 is pre-agreed with the first communicationnode or configured by signaling from the first communication node ordetermined according to a configuration of the CP (T1 and T2 may be thesame). The CP length used for transmitting the signal on the resourcesin the same first-type resource group is less than or equal to t1, andthe CP length used for transmitting the signal on the resources indifferent first-type resource groups is greater than t2, where t1 or t2is pre-agreed with the first communication node or configured bysignaling from the first communication node (t1 and t2 may be the same).The resources in different first-type resource groups correspond todifferent CP lengths. The resources in the same first-type resourcegroup correspond to a same CP length. Transmission signals correspondingto the resources in the same first-type resource group are not allowedto be space division multiplexed. Transmission signals corresponding tothe resources in different first-type resource groups are allowed to bespace division multiplexed. The number of first-type resource groups isequal to a maximum number of transmission layers in space divisionmultiplexing. The transmission signals corresponding to the resources inthe same first-type resource group are quasi-co-located. The resourcesin the same first-type resource group have a same channelcharacteristic. A channel characteristic of a resource in each of the Nfirst-type resource groups is acquirable according to a channelcharacteristic of another resource in the each of the N first-typeresource groups.

In an alternative embodiment, the method includes at least one of thecharacteristics described below. The grouping configuration informationincludes at least one of: grouping restriction indication information, athreshold parameter for determining groups and a parameter fordetermining a grouping rule; and the grouping configuration informationis configured by signaling from the first communication node orpre-agreed with the first communication node. The transmission signalscorresponding to the resources in the same first-type resource group areallowed to be space division multiplexed. The transmission signalscorresponding to the resources in different first-type resource groupsare not allowed to be space division multiplexed. A number of spacedivision multiplexing layers of the transmission signals correspondingto the resources in the same first-type resource group is less than orequal to a number of resources in the same first-type resource group.

In an alternative embodiment, the grouping restriction indicationinformation includes the following: the number of resources in onefirst-type resource group is less than or equal to a, and the number Nof first-type resource groups is less than or equal to b, where both aand b are natural numbers greater than or equal to 1. Alternatively, thenumber of resources in the same first-type resource group is a fixednumber a, and the number N of first-type resource groups is a fixednumber b, where both a and b are the natural numbers greater than orequal to 1.

In an alternative embodiment, the method includes agreeing with thefirst communication node that the N first-type resource groups have atleast one of the characteristics described below. The resources in thesame first-type resource group correspond to a same set of TAparameters. The resources in the same first-type resource groupcorrespond to a same set of CP parameters. When different resources aretransmitted simultaneously, CP lengths corresponding to the differentresources are determined according to a maximum value of absolute valuesof differences of resource group indexes of first-type resource groupscorresponding to the different resources. Different first-type resourcegroups correspond to different CP parameters. Resources in the samefirst-type resource group corresponds to a same receiving resource.Different first-type resource groups correspond to different receivingresources, and the different receiving resources are generated in a timedivision manner (the different receiving resources corresponding to thedifferent first-type resource groups are generated in the time divisionmanner by the second communication node which may perform the steps ofdetermining the M resources and feeding back the indication informationfor indicating the M resources and the first-type grouping indicationinformation for indicating that the M resources are divided into the Nfirst-type resource groups to the first communication node). At leastone type of channel or signal state parameter corresponding to the samefirst-type resource group is the same. The resources in the samefirst-type resource group are allowed to be frequency divisionmultiplexed and/or space division multiplexed and/or time divisionmultiplexed (a time division multiplexing manner is preferable for thesame first-type resource group). The resources in different first-typeresource groups do not support frequency division multiplexing or spacedivision multiplexing and only support time division multiplexing. Theresources in the same first-type resource group correspond to a sameindex indication parameter.

The limitation expression about the multiplexing mode “supporting(allowing) the space division multiplexing” and “not supporting thespace division multiplexing” are used for limiting the data transmissionstage after the feedback in which the first communication node transmitsdata to the second communication node. If the first communication nodetransmits information to the second communication node and the one ormore third communication nodes by using the different resources, thereare no such limitations. Specifically, for example, the limitation maybe only imposed on two time division multiplexed resources. If oneresource is sent to the second communication node and the other resourceis sent to the third communication node, the two resources may be spacedivision multiplexed and frequency division multiplexed.

In an alternative embodiment, channel parameters being the same orsignal state parameters being the same includes at least one of: rankindicators (RI) being the same; reference signal received powers (RSRP)being the same; channel quality indications (CQI) being the same;receiving signal-to-noise ratios (SNR) being the same; precoding matrixindicators (PMI) being the same; and channel reference signals (CRI)being the same, and/or a same index corresponding to the resources inthe same first-type resource group includes at least one of: a receivingbeam index, a receiving sector index, a receiving antenna index, areceiving sequence index, a receiving port index and a receiving beamcombination index.

In an alternative embodiment, the method further includes agreeing withthe first communication node on the following characteristic: acapability of simultaneously generating receiving manners correspondingto all the N first-type resource groups is possessed. In the embodiment,the second communication may agree with the first communication node onthe following characteristic: the second communication node processesthe capability of simultaneously generating the receiving mannerscorresponding to all the N first-type resource groups. The secondcommunication node may perform the steps of determining the M resourcesand feeding back the indication information for indicating the Mresources and the first-type grouping indication information forindicating that the M resources are divided into the N first-typeresource groups to the first communication node.

In an alternative embodiment, the method includes agreeing with thefirst communication node that the N first-type resource groups have oneof the characteristics described below. The resources in the samefirst-type resource group are not allowed to be space divisionmultiplexed, the resources in different first-type resource groups areallowed to be space division multiplexed, and the maximum number ofspace division multiplexing layers is less than or equal to the numberof first-type resource groups. The resources in the same first-typeresource group are allowed to be space division multiplexed, theresources in different first-type resource groups are not allowed to bespace division multiplexed, and the number of space divisionmultiplexing layers of the resources in the same first-type resourcegroup is less than or equal to the number of resources in the samefirst-type resource group.

In an alternative embodiment, the method includes at least one of thecharacteristics described below. In the first-type grouping indicationinformation, resources in each of the N first-type resource groups aresequentially arranged according to receiving qualities of the resources.The first-type grouping indication information includes at least one of:the number of the groups, indication on resources in each of the Nfirst-type resource groups, information on a number of resources in eachof the N first-type resource groups, grouping manner indicationinformation, group index information and information on a commonparameter corresponding to each of the N first-type resource groups. Thefirst-type grouping indication information includes a plurality oflevels of groups. The first-type grouping indication informationincludes two levels of groups and one first-level group includes aplurality of second-level groups, where the second communication nodeconfigured to divide the M resources into the N first-type resourcegroups has a capability of simultaneously generating receiving resourcescorresponding to different first-level groups or all first-level groupsand generating, in a time division manner, different receiving resourcescorresponding to the plurality of second-level groups in a samefirst-level group, or a capability of generating, in the time divisionmanner, receiving resources corresponding to resources in the differentfirst-level groups and simultaneously generating receiving resourcescorrespond to different second-level groups or all second-level groupsincluded in the same first-level group.

In an alternative embodiment, the method includes at least one of thecharacteristics described below. The number of the groups has a mappingrelationship with information on resources for transmitting theindication information and the first-type grouping indicationinformation. The information on the resources in each of the Nfirst-type resource groups, where the information on the resourcesincludes at least one of: index information of the resources in thecandidate resource set and CQI information corresponding to each of theresources. The common parameter corresponding to each of the Nfirst-type resource groups includes at least one of the followingparameters: a CP length corresponding to each of the N first-typeresource groups, a PMI corresponding to each of the N first-typeresource groups, an RI corresponding to each of the N first-typeresource groups, a CQI corresponding to each of the N first-typeresource groups, a TA parameter corresponding to each of the Nfirst-type resource groups, a quasi-co-location parameter correspondingto each of the N first-type resource groups, and a receiving resourcecorresponding to each of the N first-type resource groups. A resourceindex set of resources in a j-th first-type resource group in thefirst-type grouping indication information is {b_(i,j)−1, i=0, 1, . . ., Lj−1}, where 1≤b_(i,j)≤TBN, b_(i,j)<b_(i+1,j), the resource index setis denoted with

$\left\lceil {\log\mspace{14mu} 2\begin{pmatrix}{TBN} \\{Lj}\end{pmatrix}} \right\rceil$bits, a value of the

$\left\lceil {\log\mspace{14mu} 2\begin{pmatrix}{TBN} \\{Lj}\end{pmatrix}} \right\rceil$bits is

${{abbi} = {\sum\limits_{i = 0}^{{Lj} - 1}\;\left\langle \begin{matrix}{{TBN} - b_{i}} \\{{Lj} - i}\end{matrix} \right\rangle}},$where

$\left\langle \begin{matrix}x \\y\end{matrix} \right\rangle = \left\{ {\begin{matrix}{\begin{pmatrix}x \\y\end{pmatrix},{x \geq y}} \\{0,{x < y}}\end{matrix},} \right.$TBN is a total number of resources in the candidate resource set,0≤j≤N−1, N is a number of first-type resource groups, Lj is a number ofresources in the j-th first-type resource group and

$\quad\begin{pmatrix}A \\B\end{pmatrix}$denotes a number of different combinations of selecting B numbers from Anumber.

In an alternative embodiment, N satisfies one of the followingcharacteristics: N is a first agreed value; and N is less than or equalto N_max, where N_max is a second agreed value (which may a value agreedby the first communication node and the second communication node).

In an alternative embodiment, the method further includes feeding back amaximum number of simultaneously generatable different receivingresources corresponding to different first-type resource groups to thefirst communication node. In the embodiment, the different receivingresources may be generated by the second communication node which mayperform the steps of determining the M resources and feeding back theindication information for indicating the M resources and the first-typegrouping indication information for indicating that the M resources aredivided into the N first-type resource groups to the first communicationnode.

In an alternative embodiment, the resources in the candidate resourceset are used for at least one of: receiving and/or transmitting thesynchronization signal; receiving and/or transmitting the data signal;receiving and/or transmitting the control signal; and receiving and/ortransmitting the pilot signal.

In an alternative embodiment, different first-type resource groupsinclude a same number of resources or different numbers of resources.

In an alternative embodiment, the method includes one of thecharacteristics described below. The resources in the same first-typeresource group are not allowed to be space division multiplexed and theresources in different first-type resource groups are allowed to bespace division multiplexed. The resources in the same first-typeresource group are allowed to be space division multiplexed and theresources in different first-type resource groups are not allowed to bespace division multiplexed.

In an alternative embodiment, the method includes one of thecharacteristics described below. A maximum number of space divisionmultiplexing layers available to the resources in the same first-typeresource group is less than or equal to a maximum number of spacedivision multiplexing layers available to the resources in differentfirst-type resource groups. The maximum number of space divisionmultiplexing layers available to the resources in the same first-typeresource group is greater than or equal to the maximum number of spacedivision multiplexing layers available to the resources in differentfirst-type resource groups. The maximum number of space divisionmultiplexing layers available to the resources in the same first-typeresource group is less than the maximum number of space divisionmultiplexing layers available to the resources in different first-typeresource groups. The maximum number of space division multiplexinglayers available to the resources in the same first-type resource groupis greater than the maximum number of space division multiplexing layersavailable to the resources in different first-type resource groups.

In an alternative embodiment, the method includes agreeing with thefirst communication node on one of the characteristics described below.The resources in the same first-type resource group support simultaneousreception. The resources in different first-type resource groups do notsupport simultaneous reception. The resources in the same first-typeresource group support simultaneous reception and the resources indifferent first-type resource groups do not support simultaneousreception. The resources in the same first-type resource group supportsimultaneous reception and the resources in different first-typeresource groups support simultaneous reception. That is, the resourcesin different first-type resource groups may not be simultaneouslyreceivable by the terminal.

In an alternative embodiment, the method includes agreeing with thefirst communication node on one of the characteristics described below.The resources in different first-type resource groups supportsimultaneous reception. The resources in the same first-type resourcegroup support simultaneous reception. The resources in differentfirst-type resource groups may not be simultaneously receivable by theterminal, and the resources in the same first-type resource group do notsupport simultaneous reception. The resources in different first-typeresource groups support simultaneous reception and the resources in thesame first-type resource group support simultaneous reception. That is,the resources in the same first-type resource group may not besimultaneously receivable by the terminal.

In an alternative embodiment, the method includes at least one of thefollowing: the N first-type resource groups are associated with achannel measurement related process; and the N first-type resourcegroups are associated with a channel measurement related set.

In an alternative embodiment, the channel measurement related process isa channel state information (CSI) process; and the channel measurementrelated set includes at least one of a CSI reporting set (CSI reportingsettings), a resource set (Resource settings), a CSI measurement set(CSI measurement settings), a link set (link settings), and a referencesignal (RS) set (RS settings), where the CSI measurement set includesone or more links, each of which is used for establishing a relationshipbetween the resource set and the CSI reporting set.

A method for acquiring grouping indication information is furtherprovided in the embodiment. FIG. 3 is a flowchart of a method foracquiring grouping indication information according to an embodiment ofthe present invention. As shown in FIG. 3, the method includes the stepsdescribed below.

In step S302, second-type grouping indication information is acquired.The second-type grouping indication information includes at least oneof: information on a group index set, grouping manner indicationinformation, information on resources in a group, where the group indexset includes at least one group index.

The above operation may be performed by a second communication node.

In the above steps, the second communication node may acquire thesecond-type grouping indication information (which may be transmitted bya first communication node).

In an alternative embodiment, the method further includes determining atransmission parameter and/or a reception parameter of a signalcorresponding to the second-type grouping indication informationaccording to the second-type grouping indication information.

In an alternative embodiment, the signal includes at least one of acontrol channel signal, a data channel signal and a reference signal.

In an alternative embodiment, the step in which the second-type groupingindication information is acquired includes at least one of the stepsdescribed below. The second-type grouping indication information isacquired according to a rule agreed with the first communication node.Semi-static signaling is received and the second-type groupingindication information is acquired from the semi-static signaling.Dynamic signaling is received and the second-type grouping indicationinformation is acquired from the dynamic signaling. A system message isreceived and the second-type grouping indication information is acquiredfrom the system message. It is to be noted that the above acquisitionmanners are several preferred manners and the second-type groupingindication information may be acquired in other manners.

In an alternative embodiment, the step of determining the transmissionparameter and/or the reception parameter of the signal corresponding tothe second-type grouping indication information according to thesecond-type grouping indication information includes the steps describedbelow. A correspondence pre-agreed with the first communication node isdetermined. The correspondence is a correspondence between thesecond-type grouping indication information and the transmissionparameter and/or the reception parameter. The transmission parameterand/or the reception parameter are determined according to thecorrespondence and the second-type grouping indication information.

In an alternative embodiment, the correspondence between the second-typegrouping indication information and the transmission parameter and/orthe reception parameter is included in first-type grouping indicationinformation fed back to the first communication node. The first-typegrouping indication information is fed back by the second communicationnode to the first communication node. The second communication node mayperform the above step of acquiring the second-type grouping indicationinformation.

In an alternative embodiment, the transmission parameter includes atleast one of: a modulation and coding scheme (MCS) set corresponding tothe signal, a multiplexing manner used by the signal, a length of acyclic prefix (CP) corresponding to the signal, a number of spacedivision multiplexing layers used by the signal, demodulation referencesignal port information used by the signal, quasi-co-located referencesignal resource information corresponding to the signal, structuralinformation corresponding to the signal, a channel characteristicreference signal corresponding to the signal and a transmission mannercorresponding to the signal; where the structural information includesat least one of: a CP length of a start symbol of a time unit,information indicating whether the start symbol of the time unitincludes a synchronization signal, and a CP length of a last symbol ofthe time unit; and/or the reception parameter includes a receivingresource for receiving the signal. Optionally, the receiving resourceincludes at least one of: a receiving port, a receiving antenna, areceiving beam, a receiving precoding weight, receiving time, receivingfrequency-domain resource, a receiving sector and a receiving sequence.

In an alternative embodiment, a grouping manner indicated by thesecond-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to each ofresources in a candidate resource set, grouping according to a channelquality corresponding to each of the resources in the candidate resourceset, grouping according to a predetermined multiplexing manner, groupingaccording to a timing advance (TA) parameter, grouping according to acyclic prefix (CP) length, grouping according to a space divisionmultiplexing manner, grouping according to a quasi-co-locationrelationship, grouping according to a transmitted measurement referencesignal, and grouping according to a channel characteristic. In theembodiment, before a terminal receives the second-type groupingindication information, an uplink measurement reference signal may besent to a base station to notify the base station of the groupingaccording to the uplink measurement reference signal.

In an alternative embodiment, the receiving resource includes at leastone of: the receiving beam, the receiving antenna, the receiving port, areceiving precoding matrix, the receiving time, the receivingfrequency-domain resource, the receiving sector and the receivingsequence.

In an alternative embodiment, the information on the resources in thegroup includes resource information of the reference signal. Thereference signal includes at least one of: a demodulation referencesignal and a measurement reference signal.

In an alternative embodiment, resources in a same group have a samechannel characteristic and/or quasi-co-location information.

In an alternative embodiment, a correspondence exists between the atleast one group index and port information of the measurement referencesignal transmitted by the second communication node. The secondcommunication node acquires the second-type grouping information.

A signal receiving method is further provided in the embodiment. FIG. 4is a flowchart of a signal receiving method according to an embodimentof the present invention. As shown in FIG. 4, the method includes thesteps described below.

In step S402, third-type grouping indication information is acquired.

In step S404, a demodulation reference signal and/or a control channelare received according to the third-type grouping indicationinformation.

The above operations may be performed by a second communication node andthe third-type grouping indication information may be from a firstcommunication node.

In an alternative embodiment, the third-type grouping indicationinformation includes at least one of: the number of the groups,indication on resources in each group, information on a number ofresources in each group, grouping manner indication information andgroup index information.

In an alternative embodiment, the third-type grouping indicationinformation is acquired in at least one of the manners described below.Feedback information is acquired according to a signal transmitted bythe first communication node, where the feedback information includesthe third-type grouping indication information. The second communicationnode may receive the signal transmitted by the first communication node,acquire the feedback information and feed back the feedback informationto the first communication node. The third-type grouping indicationinformation is acquired according to a rule agreed with the firstcommunication node. Signaling information is received, where thesignaling information includes the third-type grouping indicationinformation. The receiving the signaling information may includereceiving the third-type grouping indication information transmitted bysemi-static signaling, receiving the third-type grouping indicationinformation transmitted by dynamic signaling, and receiving thethird-type grouping indication information transmitted through a systemmessage.

In an alternative embodiment, the step in which the demodulationreference signal and/or the control channel are received according tothe third-type grouping indication information includes the stepdescribed below. According to the third-type grouping indicationinformation, the demodulation reference signal and/or the controlchannel are received on time division multiplexed N1 resources, whereN1=x×N or N1 is less than or equal to N, where N1 is an integer greaterthan 0, N is a number of third-type groups included in the third-typegrouping indication information and x is an integer greater than orequal to 1.

In an alternative embodiment, the demodulation reference signal and/orthe control channel are received on the N1 resources for transmittingthe demodulation reference signal by using a receiving resource in areceiving resource set.

In an alternative embodiment, one or more receiving resources areselected from the receiving resource set according to a certain rule,and data and/or a control signal and/or a reference signal subsequent tothe demodulation reference signal are received according to the selectedone or more receiving resources.

In an alternative embodiment, the method further includes obtaining thereceiving resource set in at least one of the manners described below.The receiving resource set includes receiving resources corresponding toall groups indicated by the third-type grouping indication information.The receiving resource set includes receiving resources corresponding toN2 group indexes agreed with the first communication node, where N2 isan integer greater than or equal to 1. The receiving resource set isdetermined by acquiring signaling indication information.

In an alternative embodiment, the receiving resource includes at leastone of: a receiving beam, a receiving antenna, a receiving port, areceiving precoding matrix, receiving time, receiving frequency-domainresource, a receiving sector and a receiving sequence.

In an alternative embodiment, before the demodulation reference signaland/or the control channel are received on the time division multiplexedN1 resources according to the third-type grouping indicationinformation, the method further include acquiring x and/or N1.

In an alternative embodiment, x and/or N1 are acquired in at least oneof the manners described below. x and/or N1 are acquired in a manneragreed with the first communication node. x and/or N1 are acquired in asemi-static signaling configuration manner. x and/or N1 are acquired ina dynamic signaling configuration manner.

In an alternative embodiment, the step in which the demodulationreference signal and/or the control channel are received according tothe third-type grouping indication information includes the stepdescribed below. The demodulation reference signal and/or the controlchannel are received on an agreed time unit according to the third-typegrouping indication information, and the demodulation reference signaland/or the control channel are received on only one time divisionmultiplexed resource on a non-agreed time unit.

A method for receiving feedback information is further provided in theembodiment. FIG. 5 is a flowchart of a method for receiving feedbackinformation according to an embodiment of the present invention. Asshown in FIG. 5, the method includes the steps described below.

In step S502, the feedback information is received from a secondcommunication node. The feedback information includes indicationinformation for indicating M resources selected by the secondcommunication node and first-type grouping indication information forindicating that the second communication node divides the M resourcesinto N first-type resource groups.

In step S504, resource scheduling is performed according to the feedbackinformation, and/or signal transmission is performed according to thefeedback information. Both N and M are integers, N is less than or equalto M, and the M resources are selected from a candidate resource set.

The above operations may be performed by a first communication node(such as a base station).

In the above steps, the second communication node groups transmissionresources and feedback the information to the first communication node,resources in a same group have certain common characteristics, andresources in different groups have different characteristics; limitedfeedback information is used to provide the first communication nodewith more information so that the first communication node has improvedscheduling flexibility and can reasonably and effectively manage theresources. Therefore, the method may solve the problem in the existingart that the transmission beams and/or receiving beams cannot bereasonably and flexibly managed and scheduled and achieve an effect offlexibly managing and scheduling the transmission beams and/or thereceiving beams.

In an alternative embodiment, before the feedback information isreceived from the second communication node, the method further includesat least one of the steps described below. Signals corresponding to allor part of resources in the candidate resource set are transmitted tothe second communication node. Information for determining thefirst-type grouping indication information is transmitted to the secondcommunication node, where the information includes at least one of:grouping restriction indication information, a parameter for determininga grouping rule, a threshold parameter for determining groups,configuration indication information of the candidate resource set andgrouping manner indication information.

A number of resources in a same first-type resource group is less thanor equal to a, and a number N of first-type resource groups is less thanor equal to b; or the number of resources in the same first-typeresource group is a fixed number a, and the number N of first-typeresource groups is a fixed number b where both a and b are naturalnumbers greater than or equal to 1.

In an alternative embodiment, a grouping manner indicated by thefirst-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to eachresource; grouping according to a channel quality corresponding to eachresource; grouping according to a predetermined multiplexing manner;grouping according to a timing advance (TA) parameter; groupingaccording to a cyclic prefix (CP) length; grouping according to a spacedivision multiplexing manner; and grouping according to aquasi-co-location relationship.

In an alternative embodiment, the grouping according to a predeterminedmultiplexing manner includes the grouping according to a space divisionmultiplexing manner.

In an alternative embodiment, the receiving resource includes at leastone of: a receiving beam, a receiving antenna, a receiving port, areceiving precoding matrix, receiving time, receiving frequency-domainresource, a receiving sector and a receiving sequence.

In an alternative embodiment, the N first-type resource groups have atleast one of the characteristics described below. A same first-typeresource group corresponds to a same TA. Different first-type resourcegroups correspond to different TAs. Resources in the same first-typeresource group are allowed to be scheduled in a same time unit. All orpart of the resources in the same first-type resource group are allowedto be scheduled in the same time unit. The different first-type resourcegroups are scheduled in different time units and not schedulable in thesame time unit. A multiplexing manner set of the resources in the samefirst-type resource group is a set A, and a multiplexing manner set ofresources in the different first-type resource groups is a set B, wherethe set B is a true subset of the set A or the set A is a true subset ofthe set B. The resources in the same first-type resource group are notallowed to be space division multiplexed in the same time unit, theresources in the different first-type resource groups are allowed to bespace division multiplexed in the same time unit, where a number ofspace division multiplexing layers is less than or equal to the numberof first-type resource groups. A first CP length is adopted when theresources in the same first-type resource group are simultaneouslyscheduled in the same time unit or switched between different timeunits. A second CP length is adopted when the resources in the differentfirst-type resource groups are scheduled in the same time unit. Whenscheduled resources switch between the different first-type resourcegroups or combination of first-type resource groups, a switching startorthogonal frequency division multiplexing (OFDM) symbol uses a third CPlength, and/or a switching start position has a synchronization signalused for a reception timing of the second communication node, and/or alast OFDM symbol before switching uses the third CP length. The samefirst-type resource group has a same quasi-co-location and all theresources in the same first-type resource group share a quasi-co-locatedreference signal.

In an alternative embodiment, the resources in the same first-typeresource group are allowed to be space division multiplexed in a sametime unit, where the number of space division multiplexing layers isless than or equal to a number of resources in the first-type resourcegroup; and the resources in different first-type resource groups are notallowed to be space division multiplexed in the same time unit; and/orCP lengths corresponding to the resources in different first-typeresource groups scheduled in the same time unit is obtained according todifferences of resource group indexes of the different first-typeresource groups where the resources are located.

In an alternative embodiment, the third CP length is greater than thefirst CP length and the second CP length.

In an alternative embodiment, one of the characteristics described belowis included. The resources in the same first-type resource group are notspace division multiplexed and the resources in different first-typeresource groups are space division multiplexed. The resources in thesame first-type resource group are space division multiplexed and theresources in different first-type resource groups are not space divisionmultiplexed.

In an alternative embodiment, one of the characteristics described belowis included. A maximum number of space division multiplexing layersavailable to the resources in the same first-type resource group is lessthan or equal to a maximum number of space division multiplexing layersavailable to the resources in different first-type resource groups. Themaximum number of space division multiplexing layers available to theresources in the same first-type resource group is greater than or equalto the maximum number of space division multiplexing layers available tothe resources in different first-type resource groups. The maximumnumber of space division multiplexing layers available to the resourcesin the same first-type resource group is less than the maximum number ofspace division multiplexing layers available to the resources indifferent first-type resource groups. The maximum number of spacedivision multiplexing layers available to the resources in the samefirst-type resource group is greater than the maximum number of spacedivision multiplexing layers available to the resources in differentfirst-type resource groups.

In an alternative embodiment, the method further includes agreeing withthe second communication node on one of the characteristics describedbelow. The second communication node is capable of simultaneouslyreceiving the resources in the same first-type resource group. Thesecond communication node is incapable of simultaneously receiving theresources in different first-type resource groups. The secondcommunication node is capable of simultaneously receiving the resourcesin the same first-type resource group and the second communication nodeis incapable of simultaneously receiving the resources in differentfirst-type resource groups. The second communication node is capable ofsimultaneously receiving the resources in the same first-type resourcegroup and the second communication node is capable of simultaneouslyreceiving the resources in different first-type resource groups.

In an alternative embodiment, the method further includes agreeing withthe second communication node on one of the characteristics describedbelow. The second communication node is capable of simultaneouslyreceiving the resources in different first-type resource groups. Thesecond communication node is incapable of simultaneously receiving theresources in the same first-type resource group. The secondcommunication node is capable of simultaneously receiving the resourcesin different first-type resource groups and the second communicationnode is incapable of simultaneously receiving the resources in the samefirst-type resource group. The second communication node is capable ofsimultaneously receiving the resources in different first-type resourcegroups and the second communication node is capable of simultaneouslyreceiving the resources in the same first-type resource group.

In an alternative embodiment, the method includes at least one of thefollowing: the N first-type resource groups are associated with achannel measurement related process; and the N first-type resourcegroups are associated with a channel measurement related set.

In an alternative embodiment, the channel measurement related process isa channel state information (CSI) process; and the channel measurementrelated set includes at least one of a CSI reporting set (CSI reportingsettings), a resource set (Resource settings), a CSI measurement set(CSI measurement settings), a link set (link settings), and a referencesignal (RS) set (RS settings), where the CSI measurement set includesone or more links, each of which is used for establishing a relationshipbetween the resource set and the CSI reporting set.

A method for notifying grouping indication information is furtherprovided in the embodiment. FIG. 6 is a flowchart of a method fornotifying grouping indication information according to an embodiment ofthe present invention. As shown in FIG. 6, the method includes the stepsdescribed below.

In step S602, second-type grouping indication information is determined.

In step S604, a second communication node is notified of the second-typegrouping indication information. The second-type grouping indicationinformation includes at least one of: information on a group index set,grouping manner indication information, information on resources in agroup, where the group index set includes at least one group index.

The above operations may be performed by a first communication node.

In an alternative embodiment, the step in which the second communicationnode is notified of the second-type grouping indication informationincludes at least one of the steps described below. The second-typegrouping indication information is agreed with the second communicationnode. The second-type grouping indication information is transmitted tothe second communication node by semi-static signaling. The second-typegrouping indication information is transmitted to the secondcommunication node by dynamic signaling. The second-type groupingindication information is transmitted to the second communication nodethrough a system message.

In an alternative embodiment, the second-type grouping indicationinformation is used by the second communication node to determine atransmission parameter and/or a reception parameter of a signalcorresponding to the second-type grouping indication information.

In an alternative embodiment, the transmission parameter includes atleast one of: an MCS set corresponding to the signal, a multiplexingmanner used by the signal, a length of a cyclic prefix (CP)corresponding to the signal, a number of space division multiplexinglayers used by the signal, demodulation reference signal portinformation used by the signal, quasi-co-located reference signalresource information corresponding to the signal, structural informationcorresponding to the signal, a channel characteristic reference signalcorresponding to the signal and a transmission manner corresponding tothe signal. The structural information includes at least one of: a CPlength of a start symbol of a time unit, information indicating whetherthe start symbol of the time unit includes a synchronization signal, anda CP length of a last symbol of the time unit. The reception parameterincludes a receiving resource for receiving the signal. Optionally, thereceiving resource includes at least one of: a receiving port, areceiving antenna, a receiving beam, a receiving precoding weight,receiving time, receiving frequency-domain resource, a receiving sectorand a receiving sequence.

In an alternative embodiment, the signal includes at least one of a datachannel signal, a control channel signal and a reference signal.

In an alternative embodiment, before the second-type grouping indicationinformation is transmitted to the second communication node, the methodfurther includes determining a correspondence between the second-typegrouping indication information and a parameter, where the parameterincludes the transmission parameter and/or the reception parameter.

In an alternative embodiment, the step of determining the correspondencebetween the second-type grouping indication information and thetransmission parameter and/or the reception parameter includes at leastone of the steps described below. The correspondence between thesecond-type grouping indication information and the parameter isdetermined in an agreed manner with the second communication node. Thecorrespondence between the second-type grouping indication informationand the parameter is determined by receiving first-type groupingindication information fed back by the second communication node. Thecorrespondence is transmitted to the second communication node.

In an alternative embodiment, the step in which the correspondencebetween the second-type grouping indication information and theparameter is determined in the agreed manner with the secondcommunication node includes obtaining the correspondence between thesecond-type grouping indication information and the parameter accordingto a measurement reference signal transmitted by the secondcommunication node.

In an alternative embodiment, the first-type grouping indicationinformation includes at least one of: information on the number of thegroups, indication on resources in each group, information on a numberof resources in each group, grouping manner indication information,group index information and information on a common parametercorresponding to each group.

In an alternative embodiment, the common parameter corresponding to eachgroup includes at least one of the following parameters: a CP lengthcorresponding to each group, a precoding matrix indicator (PMI)corresponding to each group, a rank indicator (RI) corresponding to eachgroup, a channel quality indication (CQI) corresponding to each group, atiming advance (TA) parameter corresponding to each group, aquasi-co-location parameter corresponding to each group, and a receivingresource corresponding to each group.

In an alternative embodiment, a grouping manner indicated by thesecond-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to atransmission resource, grouping according to a channel qualitycorresponding to the transmission resource, grouping according to apredetermined multiplexing manner, grouping according to the timingadvance (TA) parameter, grouping according to a cyclic prefix (CP)length, grouping according to a space division multiplexing manner,grouping according to a quasi-co-location relationship, groupingaccording to a measurement reference signal transmitted by the secondcommunication node, and grouping according to a channel characteristic.The transmission resource includes at least one of: a transmission beamresource, a transmission antenna resource, a transmission port resource,a transmission frequency domain resource, a transmission sequenceresource and a transmission time domain resource.

In an alternative embodiment, the receiving resource includes at leastone of: a receiving beam, a receiving antenna, a receiving port, areceiving precoding matrix, receiving time, receiving frequency-domainresource, a receiving sector and a receiving sequence.

In an alternative embodiment, the information on the resources in thegroup includes resource information of the reference signal. Thereference signal includes at least one of: a demodulation referencesignal and a measurement reference signal.

In an alternative embodiment, resources in a same group have a samechannel characteristic and/or quasi-co-location information.

In an alternative embodiment, a correspondence exists between the atleast one group index and port information of the measurement referencesignal transmitted by the second communication node.

A signal transmission method is further provided in the embodiment. FIG.7 is a flowchart of a signal transmission method according to anembodiment of the present invention. As shown in FIG. 7, the methodincludes the steps described below.

In step S702, third-type grouping indication information is determined.

In step S704, a demodulation reference signal and/or a control channelare transmitted according to the third-type grouping indicationinformation.

The above operations may be performed by a first communication node. Thedemodulation reference signal and/or the control channel may betransmitted to the second communication node.

In the above steps, the first communication node may notify the secondcommunication node of grouping indication information so that the secondcommunication node receives the demodulation reference signal and/or thecontrol channel according to the third-type grouping indicationinformation.

In an alternative embodiment, the third-type grouping indicationinformation includes at least one of: information on the number of thegroups, indication on resources in each group, information on a numberof resources in each group, grouping manner indication information andgroup index information.

In an alternative embodiment, the step in which the third-type groupingindication information is determined includes at least one of the stepsdescribed below. The third-type grouping indication information isdetermined according to first-type grouping indication informationreceived from the second communication node. The third-type groupingindication information is determined according to a rule agreed with thesecond communication node.

In an alternative embodiment, the step in which the demodulationreference signal and/or the control channel are transmitted according tothe third-type grouping indication information includes the stepdescribed below. According to the third-type grouping indicationinformation, the demodulation reference signal and/or the controlchannel are transmitted on time division multiplexed N1 resources, whereN1=x×N or N1 is less than or equal to N, where N1 is an integer greaterthan 0, N is a number of groups included in the third-type groupingindication information and x is an integer greater than or equal to 1.

In an alternative embodiment, before the demodulation reference signaland/or the control channel are transmitted according to the third-typegrouping indication information, the method further include configuringx and/or N1 for the second communication node.

In an alternative embodiment, a step of notifying the secondcommunication node of x and/or N1 includes at least one of notifying thesecond communication node of x and/or N1 in an agreed manner with thesecond communication node; notifying the second communication node of xand/or N1 by semi-static signaling; and notifying the secondcommunication node of x and/or N1 by dynamic signaling.

In an alternative embodiment, the demodulation reference signal istransmitted on the N1 resources in a same transmission manner, where atransmission manner of the demodulation reference signal includes atleast one of: a transmission beam, a transmission port, a transmissionantenna, a transmission precoding matrix and a transmission frequencydomain resource.

In an alternative embodiment, the demodulation reference signal and/orthe control channel transmitted on the N1 resources have a sametransmission manner as data and/or a control signal and/or a referencesignal transmitted subsequent to the demodulation reference signaland/or the control channel. The transmission manner of the demodulationreference signal includes at least one of: the transmission beam, thetransmission port, the transmission antenna, the transmission precodingmatrix and the transmission frequency domain resource.

In an alternative embodiment, the step in which the demodulationreference signal and/or the control channel are transmitted according tothe third-type grouping indication information includes the stepdescribed below. The demodulation reference signal and/or the controlchannel are transmitted on an agreed time unit according to thethird-type grouping indication information, and the demodulationreference signal and/or the control channel are transmitted on only onetime division multiplexed resource on a non-agreed time unit.

It is to be noted that characteristics in the various embodimentdescribed above may be used as cross-references of each other.

The present invention will be described below in conjunction withspecific embodiments.

FIG. 8 is a diagram of a hybrid beamforming communication modelaccording to an embodiment of the present invention. As shown in FIG. 8,a transmitting end has Y RF links, and each RF link is connected to 0antenna elements. In an n-th RF link, RF beamforming is performed on adigital baseband signal, that is, the signal is multiplied byW_(n)=[w_(n1) w_(n2) . . . w_(nO)]^(T) and then transmitted by the Oantenna elements connected to the n-th RF link. In the embodiment,assuming that the signals from the transmitting end to the RF links viathe digital baseband signal processor are time domain signals, that is,sequences S1, S2, . . . , and SY in FIG. 8 are all time domain signals,the RF beamforming is performed on each time domain signal, which isequivalent to RF beamforming on a full bandwidth signal, that is, one RFlink can only generate one RF beam on one OFDM symbol.

In FIG. 8, the Y RF links correspond to different antenna elements, thatis, the antenna elements are multiplexed in a grouping manner. Inanother embodiment, the antenna elements may be shared by multiple RFlinks.

Similarly, a receiving end has P RF links, and each RF link correspondsto X antenna elements. The signals are received by the antenna elements,each antenna element signal is multiplied by a weight, and the weightedvalues are summed on the RF links to form baseband signals correspondingto the RF links. The baseband signals are outputted to a basebandprocessing unit for processing.

In FIG. 8, each RF link of the transmitting end corresponds to a samenumber of antenna elements. A case where different RF links correspondto different numbers of antenna elements is not excluded in theembodiments of the present invention. Similarly, a case where differentRF links of the receiving end correspond to different numbers of antennaelements is not excluded in the embodiments of the present invention.

In the embodiments of the present invention, one antenna may correspondto only one RF link, or one antenna may correspond to multiple RF links.

Specific Embodiment 1

In the embodiment, a receiving end may determine resource selectioninformation through the steps described below and feed back the resourceselection information to a transmitting end.

In step 1, the receiving end determines configuration information of acandidate resource set. The candidate resource set includes Qsecond-type resource groups, where Q is an integer greater than or equalto 1.

In step 2, the receiving end receives a signal transmitted on the Qsecond-type resource groups.

In step 3, the receiving end selects M resources from the candidateresource set, where M is integer greater than or equal to 1. When M>1,the receiving end divides the M resources into N first-type resourcegroups, where N≤M.

In step 4, the receiving end feeds back indication information of theselected M resources and grouping indication information of thefirst-type resource groups to the transmitting end.

In step 1, the second-type resource groups may be divided according toat least one of the following resource types: a beam resource, anantenna resource, a port resource, a frequency domain resource, atransmission sequence resource and a time domain resource. Onesecond-type resource group includes one or more resources.

In an alternative embodiment, for the division of the second-typeresource groups, a first implementation mode is that different beams aredifferent groups. As shown in FIG. 9, the transmitting end has a totalof 9 transmission beams, so Q=9. The different beams may be different RFbeams or different hybrid beams. The hybrid beam is composed of an RFbeam and a baseband beam. That is, when the transmitting end hasmultiple antennas and each antenna corresponds to one RF beam, thehybrid beam is formed by pre-coding on a baseband side.

In an alternative embodiment, for the division of the second-typeresource groups, a second implementation mode is that different antennasare different groups. As shown in FIG. 10, the transmitting end has twotransmission antennas and each transmission antenna corresponds to 9 RFbeams, at this time, Q=2 and each second-type resource group includes 9resources. In the present embodiment, different antennas correspond to asame number of RF beams. Of course, a case where different antennascorrespond to different numbers of RF beams is not excluded in theembodiment. Strictly speaking, if one antenna corresponds to multiple RFlinks in FIG. 8, different beams corresponding to the one antenna shouldalso be the hybrid beam.

In an alternative embodiment, for the division of the second-typeresource groups, a third implementation mode is that different ports aredifferent second-type resource groups. For example, if there are Qports, there are Q second-type resource groups.

In an alternative embodiment, for the division of the second-typeresource groups, a fourth implementation mode is that different timedomain resources are different second-type resource groups. For example,if there are Q time domain resources, there are Q second-type resourcegroups. One time domain resource may include one or more resources. Forexample, one time domain resource includes multiple reference signalports. As shown in FIG. 13, there are a total of Q=3 second-typeresource groups, each second-type resource group corresponds to one typeof time-frequency resource and may further include multiple resources.For example, the multiple resources are included in a codedivision/frequency division manner. The time-frequency resourcesoccupied by different time-frequency resource groups in FIG. 13 aremerely examples, and other cases are not excluded. Moreover, the 3second-type resource groups in FIG. 13 are also only examples, and othergroup numbers are not excluded.

Specifically, for the division of the second-type resource groups, afifth implementation mode is that different frequency domain resourcesare different second-type resource groups. As shown in FIG. 11,different subbands correspond to different second-type resource groups.There are 3 subbands in FIG. 11, so Q=3. The subband is a continuousfrequency domain resource, similar to a definition of the subband in theexisting LTE or a definition of a measurement subband in the existingLTE. Each subband resource group in FIG. 11 includes 9 transmissionbeams. In this implementation mode, different subbands correspond to asame number of beams. Of course, in another implementation mode of theembodiment, a case where each subband includes different numbers ofbeams is not excluded. In this example, different beams corresponding tothe same subband may be transmitted in a time division manner. As shownin FIG. 11, each subband needs 9 time-division multiplexed resources.For example, the transmitting end has one transmission antenna and onlyone beam can be transmitted in each time unit, so the one beam maycorrespond to each subband, that is, one RF link beam in the time domainmay correspond to the three subbands. Therefore, 9 transmission beammeasurement signals in the three subbands may be transmitted on only 9time-division multiplexed resources. The 9 transmission beams may alsobe sent in a time division and code division/frequency division manner.In this case,

$\left\lceil \frac{9}{L} \right\rceil$time-division multiplexed resources are required to send 9 beammeasurement resources, where L represents a number of resources whichcan be transmitted in one time division multiplexed resource. Forexample, L is the number of transmission antennas. At this time, L beamsare sent within one subband on one time-division multiplexed resource bya combination of any two or three of time division, code division andfrequency division manners. In short, L RF beams may only be sent on LRF links and each RF beam may correspond to a full bandwidth.

Specifically, for the division of the second-type resource groups, asixth implementation mode is that different transmission sequencescorrespond to different second-type resource groups. For example, thereare 5 transmission sequences, so Q=5. A same transmission sequence maybe sent on different time-frequency resources. When the sametransmission sequence is sent on the different time-frequency resources,it may be considered that the second-type resource group includes oneresource or may also include multiple resources. As shown in FIG. 12, asame transmission sequence 1 is transmitted on three time-divisionmultiplexed resources. In this case, one opinion is that the first-typeresource group corresponding to the transmission sequence 1 includes oneresource and the receiving end obtains performance of the one resourcebased on integrated receiving performance of the transmission sequencetransmitted on the three time-division multiplexed resources. The otheropinion is that the first-type resource group corresponding to thetransmission sequence 1 includes three resources and the receiving endmay select a resource from the three resources. In FIG. 12, the threetime-division multiplexed resources corresponding to the sametransmission sequence are continuous in the time domain. A case wherethe three time-division multiplexed resources are discontinuous in thetime domain is not excluded in the embodiment.

Specifically, for the division of the second-type resource groups, aseventh implementation mode is that different QCL informationcorresponds to different second-type resource groups. Resources in asame second-type resource group are quasi co-located. Two resources withthe same quasi co-location information are similar to quasi co-locatedresources in the existing LTE, that is, large-scale information relatedto a channel or signal of one resource may be derived from large-scaleinformation related to a channel or signal of the other resource.

The QCL information may also be channel characteristic information orother equivalent nouns. The channel characteristic information includesat least one of the following information of a reference signal: Dopplerspread, Doppler shift, an average gain, an average delay, average anglespread, an azimuth angle of arrival (AOA), a zenith angle of arrival(ZOA), a azimuth angle of departure (AOD) and a zenith angle ofdeparture (ZOD). The above six second-type resource grouping manners areonly examples, other second-type resource grouping manners are notexcluded. In short, there are Q second-type resource groups, each ofwhich includes one or more resources. Furthermore, the Q second-typeresource groups correspond to Q reference signal resources (such asCSI-RS resources and may be other names), and each reference signalresource includes one or more ports (similar to CSI-RS ports),corresponding to one or more resources in each second-type resourcegroup.

In step 3, the receiving end selects M resources from the Q second-typeresource groups. Furthermore, the selected M resources are from allresources in the Q second-type resource groups. For example, eachsecond-type resource group includes M1 resources and the selected Mresources are from Q×M1 resources. The receiving end may select the Mresources from the Q second-type resource groups based on a certainrule. For example, the M resources are selected from the candidateresource set based on a channel quality and/or a signal qualitycorresponding to the resources, where the signal is a receiving signalon each resource and a channel is obtained by dividing the receivingsignal on each resource by a reference signal transmitted on eachresource.

In step 3, when M>1, the M resources are divided into the N first-typeresource groups, and resources in the first-type resource groups satisfyone or more of the following characteristics: resources in a samefirst-type resource group belong to one or more second-type resourcegroups. For example, the resources in the same first-type resource groupare from more than one of the Q second-type resource groups. Resourcesin a same second-type resource group belong to one or more first-typeresource groups. For example, resources in one second-type resourcegroup exist in more than one first-type resource groups.

In the above implementation modes, the above resources are used for atleast one of: receiving/transmitting a synchronization signal,receiving/transmitting a data signal, receiving/transmitting a controlsignal and receiving/transmitting a pilot signal. Thereceiving/transmitting refers to that the resources are used fortransmitting the signals and/or receiving the signals. For example, theresources are used for receiving/transmitting the pilot signal, so theresources may be beam training signals. The beam training signals may beused for training the transmitting end to transmit a transmission beamof the transmitting end corresponding to a communication link of thereceiving end, may also be used for training the transmitting end totransmit a receiving beam of the receiving end corresponding to thecommunication link of the receiving end. Of course, the beam trainingsignals may also be a transmission manner signal and/or a receivingmanner signal. The transmission manner is one or more of a transmissionbeam, a transmission port, a transmission precoding matrix, atransmission time domain resource, a transmission frequency domainresource and a transmission sequence resource used by a communicationnode to transmit signals. The receiving manner is one or more of areceiving beam, a receiving port, a receiving precoding matrix, areceiving time domain resource, a receiving frequency domain resource, areceiving sequence resource and a receiving sector resource used by thecommunication node to transmit the signals.

In the above implementation modes, preferably, the receiving enddetermines the candidate resource set according to previously obtainedconfiguration information or determines the candidate resource setaccording to a rule agreed with the transmitting end and previous beamtraining results.

Preferably, the receiving end divides the selected M resources accordingto the configuration information. The configuration information includesgrouping restriction indication information. In an alternativeembodiment, the grouping restriction indication information may includeat least one of: a maximum number of resources in each first-typeresource group, a number of feedback bits for each first-type resourcegroup, whether each first-type resource group has the same resourcequantity, a total number of feedback bits for all the first-typeresource groups, a maximum number of feedback bits for all thefirst-type resource groups and a maximum number of first-type resourcegroups. The configuration information may also include a parameter fordetermining thresholds and/or a parameter for determining a groupingrule. For example, when there are multiple grouping rules, theconfiguration information indicates which rule is currently used forgrouping. The configuration information may be obtained by usingsignaling information of the transmitting end and/or a rule agreed withthe transmitting end.

In the above embodiment, step 2 and step 3 are separate steps. Inanother embodiment, the execution order of step 2 and step 3 is notlimited to a particular order, but is determined by the receiving endaccording to a comprehensive selection. That is, the receiving endobtains the N first-type resource groups from a set of Q second-typeresource groups. The N first-type resource groups include M resources,where M is greater than or equal to 1 and N is less than or equal to M.

Specific Embodiment 2

The steps in the present embodiment are similar to those in the specificembodiment 1. A grouping rule for first-type resource groups in step 3is specifically described in the embodiment. In the embodiment, the Mselected resources are divided into groups according to the receivingresources of the M selected resources. The receiving resources arereceiving antennas and/or receiving ports and/or receiving weights(beams) and/or receiving sectors and/or receiving sequences and/orreceiving time domain resources and/or receiving frequency domainresources.

The selected resources are grouped according to the receiving resourcesinto N first-type resource groups. In a first implementation mode of theembodiment, as shown in FIG. 14, for Q=9 transmission beams, a receivingend selects six transmission beams {1, 2, 3, 5, 8, 9}, wheretransmission beams {1, 2, 3} correspond to a same receiving beam 1,transmission beam {5} corresponds to a receiving beam 2, transmissionbeams {8, 9} correspond to a same receiving beam 3. The receiving enddivides the selected six transmission beams into three groups, as shownin Table 1.

TABLE 1 First-type Second-type predetermined resource (transmissionResource Group No. beam )in the first-type resource group 0 1, 2, 3 1 52 8, 9

The receiving end needs to feed back the group information to atransmitting end. In a grouping manner in Table 1, each group includesdifferent resources, that is, the intersection set of differentfirst-type resource groups is empty. A case where the intersection setof different groups is not empty is not excluded in this embodiment. Inthe present embodiment, different groups include different numbers ofresources. A case where the transmitting end and the receiving end agreethat each group includes a same number of resources is not excluded inthe embodiment.

In FIG. 14, each group has only one receiving beam. A case where onegroup corresponds to multiple receiving beams is not excluded in theembodiment. That is, one receiving beam is composed of receiving beamsof multiple RF links at the receiving end and each RF link correspondsto one receiving beam. As shown in FIG. 15a and FIG. 15b , thecorresponding receiving beams of all transmission beams in a same groupare a combination of receiving beams, (composed of a receiving beam of areceiving antenna 1 and a receiving beam of a receiving antenna 2). InFIG. 15a , different receiving antennas correspond to a same beamdirection. Specifically, for example, the transmission beams {1, 2, 3}correspond to a receiving combination (a receiving beam 1 of thereceiving antenna 1 and a receiving beam 1 of the receiving antenna 2)of the receiving end; the transmission beam {5} corresponds to areceiving combination (a receiving beam 2 of the receiving antenna 1 anda receiving beam 2 of the receiving antenna 2) of the receiving end; andthe transmission beams {8, 9} correspond to a receiving combination (areceiving beam 3 of the receiving antenna 1 and a receiving beam 3 ofthe receiving antenna 2) of the receiving end. In FIG. 15b , differentreceiving antennas may correspond to different receiving beamdirections. For example, the transmission beams {1, 2, 3} correspond toa receiving combination (the receiving beam 1 of the receiving antenna 1and the receiving beam 2 of the receiving antenna 2) of the receivingend. The transmission beam {5} corresponds to a receiving combination of(the receiving beam 2 of the receiving antenna 1 and the receiving beam3 of the receiving antenna 2) the receiving end. The transmission beams{8, 9} correspond to a receiving combination (the receiving beam 3 ofthe receiving antenna 1 and the receiving beam 1 of the receivingantenna 2) of the receiving end. In the above implementation mode, thetransmitting end may flexibly switch and/or combine the transmissionbeams in the same group in a subsequent transmission process accordingto the feedback information of the receiving end, without affectingreception of the receiving end. For example, in FIG. 16a , thetransmitting end notifies the receiving end to receive a signal in areceiving manner corresponding to a transmission beams group 0. Thetransmitting end may flexibly select one of the transmission beams {1,2, 3} for transmission in different time units. Preferably, thetransmission beams are RF beams and the transmitting end has only one RFlink. As shown in FIG. 16a , in time units with index i to index i+3,the receiving end receives the signal in the receiving mannercorresponding to the group 0. The transmitting end may freely switchbetween the transmission beams {1, 2, 3}, which is transparent to thereceiving end.

In another implementation mode of the embodiment, the transmitting endhas multiple RF links and the above transmission beams {1, 2, 3} aredifferent RF beams or different hybrid beams, the transmitting endnotifies the receiving end to receive the signal in the receiving mannercorresponding to the group 0. At this time, the transmitting end maytransmit signals to the receiving end by using different transmissionbeam combinations at different time instants. As shown in FIG. 16b , ifthe transmitting end has three RF links, with considering the systemperformance, in a time unit with index i, three radio frequencies may besequentially directed to the transmission beams {1, 2, 6} (in this case,a transmission beam 6 is for another receiving end). At this time,transmission beams 1 and 2 may be used to simultaneously transmit thesignal to the receiving end, or transmission beams at each instant is acombined weight of the transmission beams {1, 2, 3}. For example, thetransmission beams {1, 2, 3} are transmitted by three different RFlinks, the final transmission beam is a hybrid beam of a weightedcombination of the transmission beams {1, 2, 3} according to differentbaseband weights at different time instants. The different hybrid beamsare transparent to the receive end.

In the above implementation mode, preferably, in the firstimplementation mode, the Q=9 transmission beams are sent in a timedivision manner on one RF link and Q time division multiplexed units arerequired. In the second implementation mode, the Q=9 transmission beamsare sent in the time division plus frequency division/code divisionmanner. When the Q transmission beams are RF beams and the transmittingend has 2 RF links, each RF link transmits one transmission beam at eachtime instant. As shown in FIG. 17, the Q=9 transmission beams may betransmitted at only 5 time instants. Alternatively, two transmissionbeams in each time division multiplexed unit may be further transmittedin one or more of time division, frequency division and code divisionmanners. If the time division manner is further used in each timedivision multiplexed unit, the each time division multiplexed unitfurther includes a smaller time unit. The Q different beams may be froma same transmission node or may be from multiple different transmissionnodes, and the different transmission nodes correspond to different basestations or RF transmission devices at different physical positions ofthe same base station.

In the above implementation mode, the receiving end can only generate areceiving manner corresponding to one group at each time instant andreceiving manners of different groups can only be generated in the timedivision manner. The transmission beams in the same group may betransmitted to the receiving end in one or more of the timedivision/frequency division/space division manners. However,transmission beams in different groups can only be transmitted to thereceiving end in the time division manner and cannot be transmitted tothe receiving end in the frequency division or space division manner.That is, a set of multiplexing manners of the transmission beams indifferent groups is a true subset of a set of multiplexing manners ofthe transmission beams in the same group. Equivalently, group indexes ofthe first-type resource groups have a one-to-one correspondence toreceiving modes of the receiving end, and different receiving modes ofthe receiving end can only be generated in the time division manner. Thegroup indexes of the first-type resource groups will be indicated in asubsequent data transmission or measurement phase, and the receiving endreceives the signal in a receiving mode corresponding to the groupindex. At this time, one receiving mode corresponds to one receivingbeam set (for example, the receiving beam set is composed of receivingbeam sets corresponding to part or all of RF links of the receiving endand each RF link corresponds to one RF beam).

In this case, a terminal only notifies a base station that if thetransmission beams in different groups are simultaneously sent, thereceiving end has poor receiving performance (specifically, the poorreceiving performance indicates that the terminal has poor receivingperformance for some of the transmission beams), but a case where thebase station simultaneously transmits the transmission beams indifferent groups to the terminal based on other considerations is notexcluded.

In this case, to further reduce implementation complexity, thetransmitting end and the receiving end may agree that the receiving endonly feeds back one group, that is, an agreed value of N is 1. In thesubsequent data transmission phase, the receiving end receives thesignal in the receiving manner corresponding to the one group and thetransmitting end flexibly changes the transmission beam. The receptionof the receiving end and the transmission of the transmitting end may betransparent to each other.

In FIG. 15a and FIG. 15b , receiving resources of different groups onlycorrespond to different combinations of RF receiving beams. A case wherethe receiving resources of different groups correspond to a samecombination of RF beams is not excluded in the embodiment. But thehybrid beams are different. The hybrid beam is composed of a basebandbeam and the RF beam. The receiving end may also generate receivingmanners corresponding to different groups at the same time instant.Preferably, the grouping indication information includes a first-levelgroup and a second-level group, and the first-level group includesmultiple second-level groups. The receiving end can only generateresources in different first-level groups in the time division mannerand may generate receiving manners corresponding to the multiplesecond-level groups in the first-level group at the same time instant.

The selected resources are divided into the N first-type resource groupsaccording to the receiving resources. In a second implementation mode ofthe embodiment, as shown in FIG. 11, each subband corresponds to 9transmission beams and accordingly, each subband may correspond todifferent receiving beams; but the receiving end can generate only onereceiving manner at one time instant. Therefore, subbands need to begrouped, subbands in the same subband group correspond to a samereceiving manner, and different subband groups correspond to differentreceiving manners.

As shown in FIG. 18a , the subbands are divided into two groupsaccording to receiving manners, as shown in table 2.

TABLE 2 First-type Resource Included Second-type Predetermined ResourceGroup No. (Subband No. and Transmission Beam No.) 0 (corresponding to(Subband 1, transmission beam 1), (subband 1, receiving beam 1)transmission beam 4), (subband 1, transmission beam 6), (subband 3,transmission beam 3), (subband 3, transmission beam 4) 1 (correspondingto (Subband 2, transmission beam 2), (subband 2, receiving beam 2)transmission beam 3)

In the subsequent transmission phase, the subbands in the same group intable 2 may be simultaneously scheduled to the receiving end or onlypart of the subbands may be scheduled to the receiving end, and subbandsin different groups may not be simultaneously scheduled to the receivingend. That is because different groups correspond to different receivingmanners and the receiving end can generate only one receiving manner atone time instant. For example, receiving beams 1, 2 and 3 in FIG. 18aare RF receiving beams and the receiving end has only one RF link, thereceiving end can receive the signal by using only one of the receivingbeams 1, 2 and 3 at one time instant. Different subbands in the samegroup in FIG. 18a may have different transmission beam sets, and even anintersection set of the transmission beam sets of the different subbandsmay be the empty set. In this case, assuming that the transmitting endmay simultaneously generate multiple transmission beams at the same timeinstant, for example, there are multiple RF links and/or thetransmission beams are hybrid beams, the transmission beams {1, 2, . . ., 9} in FIG. 18a are all RF beams and the above feedback manner needs atleast four RF links at the transmitting end. In the secondimplementation mode of the embodiment, the transmitting end cansimultaneously generate all transmission beam sets corresponding todifferent subbands in the same group, that is, a number of all differenttransmission beams corresponding to the same group is less than or equalto a number of transmission antennas, or the number of all the differenttransmission beams corresponding to the same group is less than or equalto a number of transmission antennas allocated to the receive end. In athird implementation mode of the embodiment, the transmission beamscorresponding to the subbands in the same group are the same or have anintersection. As shown in FIG. 18b , the subbands are grouped as shownin table 3. At this time, it is assumed that the transmitting end cansimultaneously generate a limited number of beams. For example, thetransmitting end can only generate two transmission beams among thebeams 1 to 9 in each time unit.

In the above subband grouping manner, if the transmitting end instructsthe receiving end to use the receiving manner corresponding to the group0 in the subsequent transmission phase, the transmitting end may freelyschedule between subbands {1, 3} in different time units. Thetransmitting end may schedule only one subband or simultaneouslyschedule two subbands. If a subband 2 is to be scheduled, thetransmitting end notifies the receiving end that the receiving end usesthe receiving manner corresponding to the group 1 and schedules only thesubband 2 in one time unit and cannot simultaneously schedule twodifferent resources in a subband group {1, 3} and a group {2}, as shownin FIG. 18c . In the embodiment, each subband may correspond to multipletransmission beams. Of course, each subband only needs to feed back onetransmission beam. In a manner of this example, the transmitting end mayalso indicate the receiving manner of the receiving end by using asubband scheduling situation. If the scheduled subband in transmissionphase notified via signaling is one or two of the subbands {1, 3}, thereceiving manner is the receiving beam 1. If the scheduled subband inthe transmission phase notified via signaling is the sub-band {2}, thereceiving manner is the receiving beam 2. At the same time, a number ofbits in a resource allocation field in the signaling in the transmissionphase may be determined by a number of subbands in each group. Forexample, the receiving beam notified via signaling corresponds to thegroup 0 in table 2 or table 3, the number of bits of the resourceallocation field is obtained according to a resource allocation mannercorresponding to at most two subbands. For example, the receiving beamnotified via signaling corresponds to the group 1 in table 2 or table 3,the number of bits of the resource allocation field in the subsequentsignaling information is obtained according to a resource allocationmanner corresponding to at most one subband. In this case, the number ofbits of a time-frequency resource allocation field is obtained accordingto the group index. Specifically, the group index may be previouslynotified, and the number of bits of the time-frequency resource field indynamic signaling may be obtained according to the group index.

TABLE 3 First-type Resource Included Second-type Resource (Subband No.Group No. and Transmission Beam No.) 0 (corresponding to (Subband 1,transmission beam 1), (subband 1, receiving beam 1) transmission beam2), (subband 3, transmission beam 1), (subband 3, transmission beam 2) 1(corresponding to (Subband 2, transmission beam 1), (subband 2,receiving beam 2) transmission beam 3)

In the above implementation mode, the receiving end cannot generatedifferent receiving manners corresponding to the different first-typeresource groups at the same time instant, that is, the receiving end canonly generate the receiving manner corresponding to one first-typeresource group at each time instant. The receiving manners of differentfirst-type resource groups may only be generated in the time divisionmanner.

The selected resources are divided according to the receiving resourcesinto the N first-type resource groups. In a third implementation mode ofthe embodiment, the receiving end divides the transmission beamsaccording to receiving antennas. The number of first-type resourcegroups is less than or equal to a number of antennas at the receivingend. As shown in FIG. 19, four antennas at the receiving end havedifferent physical positions and different receiving antennas receivedifferent transmission beams. In this implementation mode, thetransmitting beams are grouped according to the antennas. Referring toFIG. 19, the transmission beams are divided into different groups asshown in table 4.

TABLE 4 Included Second-type Resource First-type Resource Group No.(Transmission Beam No.) 0 (corresponding to receiving beam 1) 1, 2, 3 1(corresponding to receiving beam 2) 4, 5 2 (corresponding to receivingbeam 3) 6, 7 3 (corresponding to receiving beam 4) 8, 9

Each antenna of the receiving end show in FIG. 19 has correspondingtransmission beams, that is, for each receiving antenna, there are sometransmission beams whose receiving performances exceed a predeterminedthreshold. A case where for some receiving antennas, all transmissionbeams have a receiving performance lower than the predeterminedthreshold is not excluded in the embodiment, that is, the number offirst-type resource groups is less than or equal to the number ofreceiving antennas. In the example in table 4, the intersection set oftransmission beam sets corresponding to different receiving antennas isempty, and a case where the intersection set of the transmission beamsets corresponding to different receiving antennas is not empty is notexcluded in the embodiment. The transmitting end indicates the groupindex or combinations of the group indexes in the subsequenttransmission phase. For example, the transmitting end instructs thereceiving end to use receiving manners corresponding to the groups {0,1} and the receiving end may use the receiving antennas {1, 2}corresponding to the groups {0, 1} to receives the signal. At this time,the receiving end may generate the receiving manners of all the groupsat the same time instant. That is, the transmission beams in differentgroups may be simultaneously sent to the terminal, but differenttransmission beams in the same group may not be simultaneously sent tothe terminal. For example, different transmission beams in a groupcorresponding to the receiving antenna corresponds to different RFreceiving beams of the receiving antenna, and one receiving antennagenerates only receiving beam at one time instant.

The above embodiment describes an example of grouping the receivingantennas of the terminal. A case where the grouping is according topanels (one panel may corresponding to one or more receiving antennas)or a subset of receiving antennas at the receiving end is not excludedin the embodiment. In short, the achieved effect is that the terminalfeeds back to the base station that the transmission beams in differentgroups may be simultaneously transmitted to the terminal and thetransmission beams in the same group may not be transmitted to theterminal, or the terminal notifies the base station that the terminalhas poor receiving performance for some transmission beams when thetransmissions beams in the same group are simultaneously sent to theterminal. Alternatively, the terminal notifies the base station that theterminal cannot simultaneously receive the transmission beams in thesame group when they are simultaneously sent to the terminal.

At this time, the transmitting end may agree with the receiving end thatin the subsequent transmission, the resources in the same group cannotbe transmitted to the receiving end in a space division multiplexingmanner and the resources in different groups may be transmitted to thereceiving end in the space division multiplexing manner. Preferably, amaximum number of space division multiplexing layers is less than orequal to the number of first-type resource groups.

The selected resources are divided according to the receiving resourcesinto the N first-type resource groups. In a fourth implementation modeof the embodiment, as shown in FIG. 20, the transmission antennas arespaced apart by a relatively large distance and same beam directionsfrom different transmission antennas to a same receiving end havedifferent receiving performance. At this time, the receiving end needsto obtain combinations of transmission beams of each transmissionantenna according to an equivalent channel. As shown in FIG. 20, thetransmitting end has 2 transmission antennas, the receiving end has 2receiving antennas, each transmission antenna of the transmitting endcorresponds to 9 transmission beams, and each receiving antenna of thereceiving end corresponds to 3 receiving beams. If each antenna can onlygenerate one beam at one time instant, 9×3=27 time units are needed toobtain a channel response between each transmission beam of eachtransmission antenna and each receiving beam of each receiving antenna.When each transmission antenna uses one transmission beam and eachreceiving antenna uses one receiving beam, 2×2 equivalent channels areobtained.

$\begin{matrix}{H_{eff} = {{\begin{bmatrix}W_{1,{1^{*}X}}^{R} & 0 \\0 & W_{2,{1^{*}X}}^{R}\end{bmatrix}{H_{2X^{*}2\; O}\begin{bmatrix}W_{1,{O^{*}1}}^{T} & 0 \\0 & W_{2,{O^{*}1}}^{T}\end{bmatrix}}} = {W^{R}H_{2X^{*}2O}W^{T}}}} & (1)\end{matrix}$

Assuming that each antenna corresponds to one RF link, refer to FIG. 8,P=Y=2, H_(2X*2O) corresponds to the channel response between atransmission element and a receiving element, W_(i,1*X) ^(R) is anX-dimensional row vector corresponding to a weight of an X receivingelements corresponding to an i-th receiving antenna and a receiving beamof the i-th receiving antenna, W_(i,O*X) ^(R) is an O-dimensional columnvector denoting a RF weight on an antenna element corresponding to aj-th transmission antenna and corresponding to a transmission beam ofthe j-th transmission antenna. The transmitting end W^(T) has 9²=81combinations. Each combination includes a transmission beam of thetransmission antenna 1 and a transmission beam of the transmissionantenna 2. The receiving end W^(R) has 3²=9 combinations. Eachcombination includes a transmission beam of the receiving antenna 1 anda transmission beam of the receiving antenna 2. There are a total of9×81=729 combinations and the receiving end obtains a preferred (W_(opt)^(W), W_(opt) ^(R)) combination based on a certain criterion. Forexample, the preferred (W_(opt) ^(W), W_(opt) ^(R)) combination isobtained according to a maximized channel capacity of the equivalentchannel in the formula (1) or a pair of transmission and receiving beams(W_(opt) ^(W), W_(opt) ^(R)) is obtained based on a simple criterion.The receiving end feeds back an index corresponding to W_(opt) ^(T) tothe receiving end, where W_(opt) ^(T) is composed of the transmissionbeam of the transmission antenna 1 and the transmission beam of thetransmission antenna 2 and fed back in a group manner. At this time, atransmission beam of one transmission antenna is allowed to be empty.The feedback information needs to further include transmission antennainformation corresponding to each transmission beam or an indicationthat the transmission beam of the transmission antenna is empty. Whenthere are multiple combinations of transmission and receiving beams,different W_(opt) ^(T) is fed back in groups. For example, each groupincludes one or two transmission beam indexes corresponding totransmission beam indexes of the two transmission antennas at thetransmitting end. As shown in FIG. 20, two groups are as shown in table5. The receiving end cannot simultaneously generate combination of thereceiving modes corresponding to different groups. In the subsequenttransmission, beam combinations corresponding to different groups canonly be used to send information to the receiving end in the timedivision multiplexing manner. In the above manner, the receiving end mayfurther send, to the transmitting end, RI information transmittable whenif the transmission beam combinations are used to send information tothe receiving end. There are no intersection sets between differenttransmission beam combinations in FIG. 20, and a case where there is anintersection set between different transmission beam combinations is notexcluded in the embodiment. There is no intersection sets betweendifferent receiving beams in FIG. 21, and a case where there areintersection sets between different receiving beams is not excluded inthe embodiment, but the different receiving beam combinations cannotoverlap completely. The transmitting end may send data to the receivingend by using all transmission antennas in one group in the subsequenttransmission according to the feedback information of the receiving end,or may send the data to the receiving end by using part of thetransmission antennas in the combination and the remaining antennas inthe combination are used to serve other users. If information of theother users served by the remaining antennas and the receiving end istransmitted in a MU-MIMO transmission manner on a same time-frequencyresource, then the transmission beams in the combination are avoided tobe used by the a transmission beam on the remaining antennas to avoidlarge multi-user interference. For example, the receiving end isinstructed to use the receiving manner corresponding to the group 0 andthe transmitting end only uses the transmission antenna 1 to send thedata to the receiving end, and the transmission beam 2 is avoided whenthe transmission antenna 2 is used for sending data of other users whichoccupies the same time-frequency resource with the receiving end.

TABLE 5 Included Second-type Resource (Beam of Transmission Antenna 1,Beam of First-type Resource Group No. Transmission Antenna 2) 0(Combination of receiving beams (1, 2) 1 and 3 of two receivingantennas) 1 (Combination of receiving beams (6, 4) 3 and 2 of tworeceiving antennas)

The selected resources are divided according to the receiving resourcesinto the N first-type resource groups. In a fifth implementation mode ofthe embodiment, more types of receiving resources of the resources inthe same first-type resource group have a difference less than an agreedthreshold. As shown in FIG. 21, the receiving end uses receiving beams{1, 3} for simultaneous reception (for example, the receiving end has 2receiving antennas or the receiving end has more than 2 receivingantennas). When two or three transmission beams among the transmissionbeams {1, 4, 5} are simultaneously transmitted, a similar equivalentchannel obtained with the formula (1) has a rank equal to 1. When twotransmission beams {6, 9} are simultaneously transmitted, a similarequivalent channel obtained with the formula (1) has a rank equal to 1.When any one of the transmission beam group {1, 4, 5} and any one of thetransmission beam group {6, 9} are simultaneously transmitted, a similarequivalent channel obtained with the formula (1) has a rank equal to 2,and two characteristic values of the 2*2 equivalent channel has a smalldifference and two-layered transmission may be performed. Thetransmission beams are grouped as shown in table 6.

TABLE 6 First-type Resource Included Second-type Resource Group No.(Transmission Beam) 0 (1, 4, 5) 1 (6, 9)

At this time, the two groups correspond to a same receiving manner, thereceiving beams {1, 3}. When the transmitting end has multipletransmission antennas or when the transmission beams are hybrid beams,when the transmitting end adopts multiple beams in one group to transmitinformation to the receiving end, only one layer of data can be sent.When the transmitting end uses transmission beams in different groups tosend data to the receiving end, two layers of data may be sent or datamay be in a transmit diversity manner. That is, when the resources inthe same group are used to send information to the receiving end, theresources in the same group cannot be space division multiplexed; whenthe resources in different groups are used to send the information tothe receiving end, the resources in different groups can be spacedivision multiplexed; at this time, the number of first-type resourcegroups is equal to a maximum number of transmittable layers.

Of course, different transmission beams described above may also berepresented by one or more of ports, time domain resources, frequencydomain resources, sequence resources and sector resources. In short,different beams are represented by different resources in thesecond-type resource group. For example, one second-type resource groupis CSI-RS resources, and different ports in one CSI-RS resourcerepresent different beams.

Different receiving beams in the above implementation modes may also berepresented by one or more of receiving ports, receiving sectors,receiving sequences, and receiving time-frequency resources.

In the above implementation modes, the transmission process includes oneor more of: a data transmission process, a control channel transmissionprocess and a measurement reference signal transmission process.

Specific Embodiment 3

An implementation process in the embodiment is similar to that in thespecific embodiment 1. A grouping rule for first-type resource groups instep 3 is specifically described in the embodiment. In the embodiment,the M selected resources are grouped into the first-type resource groupsaccording to signal qualities transmitted on the M selected resources orchannel qualities corresponding to the M selected resources.

In a first implementation mode of the embodiment, channel qualitiescorresponding to resources in a same first-type resource group have adifference less than or equal to a threshold R1, and channel qualitiescorresponding to resources in different first-type resource groups havea difference greater than a threshold R2, where R1 or R2 is agreed by atransmitting end and a receiving end or configured by the transmittingend to the receiving end. R1 and R2 may be the same. The channelqualities may be CQIs of the channels, channel capacities or ranks ofchannel response matrixes corresponding to the channels.

In a second implementation mode of the embodiment, receiving signalqualities corresponding to the resources in the same first-type resourcegroup have a difference less than or equal to a threshold r1, andreceiving signal qualities corresponding to the resources in differentfirst-type resource groups have a difference greater than a thresholdr2, where r1 or r2 is agreed by the transmitting end and the receivingend or configured by the transmitting end to the receiving end. r1 andr2 may be the same. The signal quality denotes the RSRP of the signal.

After the resources are grouped in such a manner, a number of feedbackbits for the channel qualities (signal qualities) corresponding todifferent resources in a group may be effectively reduced. For example,when the channel qualities (or signal qualities) of the resources in thegroup are fed back by differences, the number of feedback bits may beeffectively reduced. In this case, for each group, an average channelquality (or signal quality) or a maximum channel quality (or signalquality) may be fed back, and the channel qualities of differentresources in the same group are fed back by feeding back thedifferences. The transmitting end may obtain priorities of differentgroups based on the channel qualities (or signal qualities), theresources in a group with a good channel quality (or signal quality)correspond to a high priority, and the resources in a group with a poorchannel quality (or signal quality) correspond to a low priority so thatthe transmitting end may reasonably utilize the resources to improve aresource utilization rate and resume communication with a standby linkwhen one link is interrupted. For example, the transmitting end and thereceiving end agree that resources with good channel qualities arereplaced with resources with poor channel qualities only after the linkis interrupted.

Specific Embodiment 4

An implementation process in the embodiment is similar to that in thespecific embodiment 1. A grouping rule for first-type resource groups instep 3 is specifically described in the embodiment. In the embodiment,the M selected resources are grouped into the first-type resource groupsaccording to TA parameters of signals transmitted on the M selectedresources.

In an alternative embodiment, TA parameters used for transmitting thesignal on resources in a same first-type resource group have adifference less than or equal to a threshold T1, and TA parameters usedfor transmitting the signal on resources in different first-typeresource groups have a difference greater than a threshold T2, where T1or T2 is agreed by a transmitting end and a receiving end or configuredby the transmitting end to the receiving end or determined according toa configuration of a CP. T1 and T2 may be the same, the resources may beresources in a measurement phase and the signals transmitted on theresources are signals or references signals transmitted the resourcesmarked in the measurement phase after the measurement phase or in a nextmeasurement phase.

In a first implementation mode of the embodiment, the TA may be anadvance of an uplink transmission time with respect to a correspondingdownlink transmission time unit. As shown in FIG. 22a , the transmittingend Q uplink access requests to a base station by using multiplePreamble resources and/or multiple transmission beam resources. The Quplink access requests arrive at the base station with different TAinformation; the receiving end (the base station) selects M uplinkaccess requests and divides the selected M uplink access requests intofour areas according to their arrival time. TA information in the samegroup has a difference less than or equal to T1 and TA information indifferent groups has a difference greater than the threshold T2, whereT1=T2 in FIG. 22a , as shown in FIG. 22a . After dividing the Preambleresources, the receiving end feeds back the Preamble resources to thetransmitting end and the transmitting end adjusts transmission time ofsignals corresponding to different groups of Preamble resourcesaccording to the TA information in a subsequent transmission phase. Forexample, different Preambles indicate different transmission beams andTAs may be different for different beam groups.

In a second implementation mode of the embodiment, the TA may bedirectly a distance of a time at which the signal arrives at thereceiving end from a start position of a transmission unit of thereceiving end. For example, the transmitting end and the receiving endagree that the transmitting end sends the signal at a start position ofan i-th transmission unit and the TA is a distance from a start positionat which the receiving end receives the signal to the start position ofthe i-th transmission unit.

In the above implementation modes, only one TS is fed back for eachgroup and the transmitting end may further reasonably adjust the startposition of the signal according to T1 and T2 in a transmissionimplementation phase. Alternatively, only group indexes are fed back andeach group index corresponds to an agreed area in FIG. 22 a.

Specific Embodiment 5

An implementation process in the embodiment is similar to that in thespecific embodiment 1. A grouping rule for first-type resource groups instep 3 is specifically described in the embodiment. In the embodiment,the M selected resources are divided into the first-type resource groupsaccording to CP parameters corresponding to signals transmitted on the Mselected resources.

In an alternative embodiment, a CP length used for transmitting thesignals on resources in a same first-type resource group is less than orequal to t1.

The CP length used for transmitting the signals on resources indifferent first-type resource groups is greater than t2, or the CPlength used for transmitting the signals on resources in differentfirst-type resource groups is greater than t2 and less than t3, or theCP length used for transmitting the signals on resources in differentfirst-type resource groups is further determined according to absolutevalues of differences of group indexes of the different first-typeresource groups corresponding to the resources and an agreed t4. t1 ort2 or t3 is agreed by a transmitting end and a receiving end orconfigured by the transmitting end to the receiving end. t1 and t2 maybe the same, t3 is greater than t2 and t4=t1.

As shown in FIG. 22b , the receiving end determines the group indexaccording to areas where different resources are located. For example,the resources are different measurement beams and that transmissionbeams {1, 2} fall into an area 1 refers to all paths of the beams fallinto the area 1, that is, a start path and a multipath expansion partfrom the beams fall into the area 1. The receiving end feeds back to thetransmitting end grouping information shown in table 7.

TABLE 7 First-type Resource Included Second-type Resource Group Index(Transmission Beam) 0 1, 2 1 3, 4 2 5, 6 3 7, 8

In a first implementation mode, the transmitting end and the receivingend agree that in a transmission phase after feedback, if differenttransmission beams in the same group are transmitted at the same timeinstant, or the different transmission beams in the same group switchbetween different time units, a CP length corresponding to an OFDMsymbol for information transmission is CP1 (a length of the CP1 is lessthan or equal to t1), and if beams in different groups are jointlytransmitted at the same time instant, (x+1)×CP1 is used. In theembodiment, x is a maximum value of absolute values of the group indexdifferences of the group in which the beams are located. For example,feedback information based on the CP length is shown in table 7 andtransmission beams in the transmission phase are as shown in FIG. 22c .A long CP is used on a first OFDM symbol when a combination oftransmission beams changes. At this time, when transmission beams with asame group index are switched or transmitted jointly, the CP length isunchanged and the CP1 is used. A length of the long CP is greater than alength of CP1 or the long CP is 4CP1, as shown in FIG. 22d .Alternatively, as shown in FIG. 22e , the long CP is used at both thestart and end positions at which the combination of transmission beamschanges.

In a first method, a receiving timing of the receiving end starts at astart position of a smallest group index in the group indexescorresponding to the transmission beams, as shown in FIG. 22c . A secondmethod is to add a micro-synchronization signal at the beginning when anindex of the combination of transmission beams changes. That is, themicro-synchronization signal is added at a beginning of a shaded portionin FIG. 22c for searching for the receiving timing at this stage. Athird method is to combine the first method with the second method, thatis, synchronization is performed based on the synchronization signalnear the start position of the smallest group index in the groupindexes, and the start position of the group index is a start positioncorresponding to the group obtained in a previous beam training orsynchronization phase. Preferably, in each group of resources, a firstresource is agreed as a synchronization resource of the group ofresources, that is, a downlink timing of the group of resources is basedon a signal sent on the first resource.

In a second implementation mode of the embodiment, the receiving timingsof the receiving end for different transmission beams all start at astart of an area 1 in FIG. 22b , where the area 1 is a start position ofa transmission unit, or the area 1 is the start position of thetransmission unit obtained by the receiving end based on thesynchronization signal. The different groups of resources have differentCP lengths, that is, the CP lengths are determined by a maximum groupindex of the first-type resource groups corresponding to currentscheduling resources and the CP length corresponding to the maximumgroup index is used. For example, if a transmission beam 1 is currentlyscheduled, the CP length corresponds to the area 1. If a transmissionbeam 3 is currently scheduled, the CP length corresponds to an area 2.The CP length corresponding to the area 2 is greater than the CP lengthcorresponding to the area 1. If the currently scheduled transmissionbeams are {1, 7, 8}, the CP length corresponds to an area 4, and the CPlength corresponding to the area 4 is greater than or equal to a lengthbetween the start position of the area 1 and an end position of the area4.

In a third implementation mode of the embodiment, as shown in FIG. 22f ,an OFDM symbol occupied by a start control field of one time unit adoptsa fixed CP length. Preferably, the fixed CP length is a length of thelong CP, and a CP length in a data domain is obtained based on groupindex indication information. Alternatively, as shown in FIG. 22g , theOFDM symbol occupied by the start control field of one time unit adoptsthe fixed CP length. Preferably, the fixed CP length is the length ofthe long CP, and the CP length in the data domain is obtained based onthe group index indication information and a length of an end CP in thedata domain is also the fixed CP length. Preferably, the fixed CP lengthis the length of the long CP.

In a fourth implementation mode of the embodiment, as shown in FIG. 22h, a start OFDM symbol and an end OFDM symbol of one time unit adopt thefixed CP length. Preferably, the fixed CP length is the length of thelong CP. Other OFDM symbols adopt a length of a short CP. The length ofthe long CP is greater than a predetermined threshold, and the length ofthe short CP is less than or equal to the predetermined threshold.

Specific Embodiment 6

An implementation process in the embodiment is similar to that in thespecific embodiment 1. A grouping rule for first-type resource groups instep 3 is specifically described in the embodiment. In the embodiment,the M selected resources are grouped into the first-type resource groupsaccording to multiplexing manners corresponding to signals transmittedon the selected M resources.

A multiplexing manner set used for transmitting signals on resources ina same first-type resource group is a set A, and a multiplexing mannerset used for transmitting the signals on resources in differentfirst-type resource groups is a set B, where the set A is different fromthe set B and the set B is a true subset of the set A. For example, theset A is a combination of any one or more of time division/frequencydivision/code division/space division manners and the set B onlyincludes the time division manner. Alternatively, the set A is a truesubset of the set B. For example, the set A is a combination of any oneor two of time division/frequency division manners and the set B is acombination of any one or more of time division/frequency division/spacedivision manners.

The multiplexing manner set used for transmitting the signal on theresources in the same first-type resource group represents amultiplexing manner set used by a first communication node to transmitinformation to a second communication node with different resources inthe same first-type resource group in a transmission phase after feedingback the grouping indication information.

Specific Embodiment 7

An implementation process in the embodiment is similar to that in thespecific embodiment 1. A grouping rule for first-type resource groups instep 3 is specifically described in the embodiment. In the embodiment,the M selected resources are grouped into the first-type resource groupsaccording to quasi-co-location information corresponding to signalstransmitted on the selected M resources.

In an alternative embodiment, resources in a same first-type resourcegroup correspond to same quasi-co-location information, and resources indifferent first-type resource groups correspond to differentquasi-co-location information. Two resources being with the samequasi-co-location information refers to the “quasi co-located resources”in the existing LTE, that is, large-scale information related to achannel or signal of one resource may be derived from large-scaleinformation related to a channel or signal of the other resource. Thelarge-scale information includes Doppler spread, Doppler shift, anaverage gain and an average delay.

In an alternative embodiment, another grouping manner is that adifference between the quasi-co-location information corresponding tothe resources in the same group is within an agreed range.Alternatively, the quasi-co-location information corresponding to theresources in the same group falls within the agreed range. In short, allthe resources in the same group are quasi co-located.

The transmitting end may allocate QCL information according to feedbackinformation, for example, each group needs to send at least onereference resource to acquire the QCL information of the group ofresources. Preferably, the first resource in each group of resources maybe agreed as a QCL reference resource of the group of resources, thatis, each group needs to send at least one reference resource to acquirethe QCL information of the group of resources. The information of thereference resource may be obtained according to one or more of: thefirst resource and index information corresponding to the group.

The QCL information or the quasi-co-location information may also bechannel characteristic information or other equivalent nouns (forexample, two resources with a same channel characteristic refers to thatthe two resources have quasi-co-beams and quasi-co-channels). Thechannel characteristic information includes at least one of thefollowing information of a reference signal: Doppler spread, Dopplershift, the average gain, the average delay, average angle spread, anazimuth-of-arrival (AOA), a zenith-of-arrival (ZOA), aazimuth-of-departure (AOD) and a zenith-of-departure (ZOD). Furthermore,the above AOA/ZOA/AOD/ZOD are all average angles.

Specific Embodiment 8

In the embodiment, a transmitting end determines third-type groupingindication information and sends a demodulation reference signal to areceiving end according to the third-type grouping indicationinformation.

In a first manner for the transmitting end to determine the third-typegrouping indication information, the transmitting end and the receivingend obtain the third-type grouping indication information according toan agreed rule. In a second manner, the transmitting end receivesfeedback information from the receiving end, where the feedbackinformation includes first-type grouping indication information, and thetransmitting end and the receiving end agree that the first-typegrouping indication information is the third-type grouping indicationinformation.

For example, third-type groups are divided according to receivingresources, that is, resources in a same third-type resource groupcorrespond to a same receiving manner and resources in differentthird-type resource groups correspond to different receiving manners.The receiving end can only generate a receiving manner corresponding toone third-type group at one time instant, and receiving mannerscorresponding to different groups can only be generated at differenttime instants. Equivalently, the first-type grouping indicationinformation and/or the third-type grouping indication information areindication information of receiving manners of the receiving end.Preferably, one receiving manner corresponds to one set of receivingbeams of the receiving end and the receiving end can only generatedifferent receiving manners in a time division manner.

For example, in the embodiment shown in FIG. 14, the receiving end feedsback information on first-type groups shown in table 1. The transmittingend learns that the receiving end has 3 groups, that is, three differentreceiving manners. The demodulation reference signal is sent in a mannershown in FIG. 23a : the demodulation reference signal is transmittedthree times in the time division manner so that the receiving end mayblindly detect data and/or a control portion on three time divisionmultiplexed resources using the three different receiving mannerscorresponding to the three groups fed back, determines the receivingmanner for receiving the data and/or the control portion from the threedifferent receiving manners to perform reception in an appropriatereceiving manner in a data and/or control region. Alternatively, thetransmitting end transmits the demodulation reference signal in such amanner to provide the transmitting end with sufficient schedulingflexibility. In this case, the transmitting end may freely selecttransmission beams, which are completely transparent to a terminal andthe transmitting end may recover a link with a standby link when one ofaligned transmission and receiving beam pairs is interrupted. It is alsoeffective for one case where a receiving beam in an originaltransmission and receiving beam pair changes to one of the threereceiving manners fed back; at this time, signals can also beefficiently received. Moreover, the above transmission manner may helpthe receiving end to preform receiving manner training and feed backinformation on receiving manners after the training to the transmittingend.

In the above implementation mode, considering that a processing delayexists between an end of RS regions and a time when the receiving enddetects a preferred receiving manner, a guard period (GP) may be set atthe end of the RS regions, as shown in FIG. 23b and the transmitting enddoes not transmit valid information or transmits the reference signal inthe GP region.

In another implementation mode of the processing delay, as shown in FIG.23c , a receiving manner in a special region of the data region may beone of the three receiving manners based on implementation modes of thereceiving end. If a final receiving manner for data and/or controlblindly detected by the receiving end according to the demodulationreference signal is the same as the receiving manner in the specialregion, a receiving signal in the data region may be processed withoutprocessing. If the final receiving manner for data and/or controlblindly detected by the receiving end according to the demodulationreference signal is different from the receiving manner in the specialregion, a receiving portion of the special region is hollowed out andrate matching is performed in a channel decoding phase, that is, areceiving signal in the special region is discarded. Alternatively,furthermore, the receiving portion of the special region may be nothollowed out, but channel interpolation cannot be performed on thedemodulation reference signal in the special region and the demodulationreference signal in the data region. Of course, if the processing delayis negligible, for example, the processing delay may be processed with aCP. The above two processing manners may be omitted and a manner in FIG.23a is directly adopted.

In the above implementation mode, the demodulation reference signal isrepeatedly transmitted only for blind detection of receiving manners. Asshown in FIG. 23a to FIG. 23c , one of the three time divisionmultiplexed demodulation reference signals may be detected to be validthrough the blind detection of the receiving manners and the other twotime division multiplexed demodulation reference signals need to bediscarded and cannot be used for subsequent demodulation of the dataand/or control regions. To further enhance the method, as shown in FIG.23d , control information and the RS may be transmitted three times inthe time division manner so that when the receiving manners are blindlydetected according to the RS, coverage and enhancement of the controlinformation may be achieved. Because the final receiving manner is anoptimal one among the three receiving manners and combined gains may beobtained through each pieces of time division multiplexed controlinformation. Because the control information in the three time divisionmultiplexed resources is the same, soft combining may be performed toachieve the coverage and enhancement of the control information andincrease robustness. The processing delay in FIG. 23d may be processedin manners similar to those in FIG. 23b and FIG. 23c , or the processingdelay may be negligible or unprocessed. In the manner shown in FIG. 23d, receiving manners of control channels may be blindly detected throughthree time division multiplexed control channels so that thetransmission of the control channels may provide the transmitting endwith more flexibility and the receiving manner of the subsequent dataportion may be indicated by the control channels.

In the receiving manner blind detection process of the receivingmanners, the number of time division transmissions of the referencesignal is equal to a number of first-type resource groups which is fedback by the receiving end. In a second implementation mode of theembodiment, the number of time division transmissions of the referencesignal and/or the control channel are an integer multiple of groupingtimes. In a third implementation mode of the embodiment, thetransmission times of the reference signal and/or the control channel inthe time division manner are less than or equal to the number offirst-type resource groups which is fed back by the receiving end. Forexample, a blind detection range of the receiving manners is configuredvia higher-layer signaling or agreed. For example, a group index set ofthe first-type resource groups is shown in table 1, a current blinddetection range is agreed as receiving manners of first-type resourcegroup indexes {0, 3} and the receiving end blindly detects a receivingmanner within the receiving manners of the first-type resource groupindexes {0, 3}. Alternatively, transmission times N1 in the timedivision manner are configured by the transmitting end and the receivingend blindly detects the receiving manner by using a receiving manner inan agreed receiving manner set based on a certain rule.

The receiving manner is one or more of the following resources used forreceiving signals: a receiving beam, a receiving antenna, a receivingport, a receiving precoding matrix, a receiving time resource, areceiving frequency domain resource and a receiving sequence resource.

In another implementation mode of the embodiment, the transmitting endsends the demodulation reference signal and/or the control channelaccording to the third-type grouping indication information only on anagreed time unit. Preferably, for a non-agreed time unit, thedemodulation reference signal and/or the control channel are transmittedonly on one time division multiplexed resource. The receiving end doesnot blindly detect the receiving manner according to the demodulationreference signal on the non-agreed time unit. Preferably, the receivingend receives the demodulation reference signal and/or control channel ina determined manner on the non-agreed time unit. Preferably, the agreedtime unit is periodic.

In an optional implementation mode of the embodiment, the demodulationreference signal and the control channel are sent on the time divisionmultiplexed resources and the receiving manner blindly detectedaccording to the demodulation reference signal only the receiving mannerof the control channel, and a receiving manner for information after thecontrol channel is notified in the control information.

Preferably, when the third-type grouping indication informationcorresponding to different receiving ends includes different numbers ofgroups, a first implementation mode is that a frequency divisionmultiplexing manner is better used for the different receiving ends, asshown in FIG. 23e . A second implementation mode is that the controlinformation and the demodulation reference signal are sent on N1 timedivision multiplexed resources, and the receiving end is notified of N1by signaling. A third implementation mode is to notify a start positionof a transmission domain by dynamic signaling. A fourth implementationmode is to notify the start position of the transmission domain for eachfrequency domain resource occupied by the receiving end; at this time,the start position of the transmission domain is different for eachfrequency domain resource allowed to be occupied by the receiving end. Afifth implementation mode is to divide frequency domain resourcesoccupied by the receiving end are grouped, where resources with a samestart position are divided onto a same group, and a start position ofeach group and frequency domain resources included in each group arenotified by dynamical signaling. A sixth implementation mode is that thetransmission beams of the transmitting end corresponding to thedifferent receiving ends are space division multiplexed and controlinformation of each transmission beam occupies a full system bandwidth.In the above fourth and fifth implementation modes, the signaling mayalso be common dynamic signaling. The common signaling is used fornotifying the start position of the whole system bandwidth resource orthe start position is notified for currently scheduled frequency domainresources via the common signaling. Of course, the signaling may also besemi-static signaling.

Specific Embodiment 9

An implementation process in the embodiment is similar to that in thespecific embodiment 1. The feedback manner in step 4 is specificallydescribed, where the feedback manner is used by a receiving end to feedback indication information of the selected resources and indicationinformation of N first-type resource groups.

As shown in FIG. 24a , there are a total of 6 pairs of transmission andreceiving beams from a base station to a terminal. The 6 transmissionand receiving beam pairs are transmission and receiving beam pairs whichhave link performance measured by the receiving end greater than apredetermined threshold in a beam training phase or a beam trackingphase. As shown in FIG. 24b , there are other transmission beams fromthe base station to the receiving end, such as transmission beams {6, 7,8}, but the three beams are unable to reach the terminal or the threebeams reach the terminal with a performance below the predeterminedthreshold.

In the embodiment, assuming that a number of transmission beam indexesis TBN and a number of receiving beam indexes is RBN, unless otherwisespecified, the number of bits required for each transmission beam indexin the feedback information in the embodiment is tbnn=┌log 2 (TBN)┐ andthe number of bits required for each receiving beam index in thefeedback information is rbnn=┌log 2 (RBN)┐. Specifically, as shown inFIG. 24a , assuming that TBN=10 and RBN=3, thus tbnn=4 and rbnn=2.

For the feedback manner of three transmission and receiving beam groups,a first feedback manner in the embodiment is that the transmitting endand the receiving end agree to feed back 6 pairs of transmission andreceiving beams and the receiving end feeds back information on eachtransmission and receiving beam pair to the transmitting end. As shownin table 1, both the transmission beam index and the receiving beamindex need to be fed back in each item, each item (transmission beamindex, receiving beam index) needs 4+2=6 bits, and 6 transmission andreceiving beam pairs need a total of 6×6=36 bits. The 36 feedback bitsare shown in table 8. The arrangement of the feedback bits in table 8 isonly an example and other arrangements are not excluded, but thefeedback bits contents do not change.

TABLE 8 Feedback Feedback Bit (Transmission Beam Bit Index Index,Receiving Beam Index)  0-5 (0000, 00)  6-11 (0001, 00) 12-17 (0011, 00)18-23 (0101, 01) 24-29 (0010, 10) 30-35 (0100, 10)

For the feedback manner of the three groups, a second feedback manner inthe embodiment is that the transmitting end and the receiving end agreeto feed back the 3 groups of transmission and receiving beam pairs andthe receiving end and the transmitting end agree on a maximum number oftransmission beams included in each group such as 3. For a group without3 transmission beams, bits are complemented for feedback and a number ofbits required for the transmission beam index is tbnn=┌log 2 (TBN+1)┐=4.A number of the complemented bits is greater than or equal to TBN, suchas 15. In this case, each transmission beam index requires 4 bits, eachgroup needs 4×3=12 bits, and 3 groups need 3×12=36 bits. The 36 feedbackbits are shown in table 9.

TABLE 9 Feedback Bit Index Feedback Bit Feedback Bit Content  0-11(0000, 0001, 0011) Transmission beam group 0 12-23 (0101, 1111, 1111)Complemented transmission beam group 1 24-35 (0010, 0100, 1111)Complemented transmission beam group 2

For the feedback manner of the three transmission and receiving beamgroups, a third feedback manner in the embodiment is that the receivingend determines a number of groups to be fed back according to ameasurement result, adds a first end symbol at an end position of eachtransmission beam group, and adds a second end symbol at an end positionof a last group. The first and second end symbols occupy a same numberof bits as each transmission beam index and the end symbols are greaterthan or equal to TBN, similar to the second feedback manner describedabove. The number of bits occupied by each transmission beam index istbnn=┌log 2 (TBN+2)┐=4 and the first and second end symbols are twodifferent values greater than or equal to TBN, for example, the firstend symbol is 11 and the second end symbol is 15. Each transmission beamindex needs 4 bits, 6 transmission beams need 4*6=24 bits, 3 end symbolsneed 4×3=12 bits, and a total of 24+12=36 bits are needed. The feedbackbits are shown in table 10.

TABLE 10 Feedback Bit Index Feedback Bit Feedback Bit Content  0-15(0000, 0001, Transmission beam group 0 + 0011, 1011) first end symbol16-23 (0101, 1011) Transmission beam group l + first end symbol 24-35(0010, 0100, Transmission beam group 2 + 1111) second end symbol

For the feedback manner of the three groups, a fourth feedback manner inthe embodiment is that the receiving end and the transmitting end agreeto feed back three groups and add the first end symbol at the endposition of each transmission beam group. The end symbol is greater thanor equal to TBN. At this time, tbnn=┌log 2 (TBN+1)┐=4. If the end symbolis 15, each transmission beam index needs 4 bits, 6 transmission beamsneed 4×6=24 bits, 2 end symbols need 4×2=8 bits, a total of 24+8=32 bitsare needed. The feedback bits are shown in table 11.

TABLE 11 Feedback Bit Index Feedback Bit Feedback Bit Content  0-15(0000, 0001, Transmission beam group 0 + 0011, 1111) first end symbol16-23 (0101, 1111) Transmission beam group 1 + first end symbol 24-31(0010, 0100) Transmission beam group 2

For the feedback manner of the three transmission and receiving beamgroups, a fifth feedback manner in the embodiment is that the receivingend and the transmitting end agree on a number of transmission beams tobe fed back and feed back a start transmission beam index and an endtransmission beam index for a group with more than one transmissionbeam. A total of 4×6+4×3=24+12=36 bits are required at this time, andthe feedback bits are shown in table 12.

TABLE 12 Feedback Bit Index Feedback Bit Feedback Bit Content 0-3 (0000)Transmission beam 0 4-7 (0001) Transmission beam 1  8-11 (0011)Transmission beam 2 12-15 (0101) Transmission beam 3 16-19 (0010)Transmission beam 4 20-23 (0100) Transmission beam 5 24-29 (000, 011)(Start transmission beam index, end transmission beam index) 30-35 (100,101) (Start transmission beam index, end transmission beam index)

Alternatively, as shown in table 13, only the index of the starttransmission beam is fed back for the group with more than onetransmission beams. A total of 4×6+2×3=24+6=30 bits are required in thisscheme, and the feedback bits are shown in table 13.

TABLE 13 Feedback Feedback Bit Index Bit Feedback Bit Content 0-3 (0000)Transmission beam 0 4-7 (0001) Transmission beam 1  8-11 (0011)Transmission beam 2 12-15 (0101) Transmission beam 3 16-19 (0010)Transmission beam 4 20-23 (0100) Transmission beam 5 24-26 000 Starttransmission beam index of group 0 27-29 011 Start transmission beamindex of group 1 27-29 100 Start transmission beam index of group 2

For the feedback manner of the three transmission and receiving beamgroups, a sixth feedback manner in the embodiment is that the receivingend and the transmitting end agree to feed back 3 groups and

${abbnj} = \left\lceil {\log\; 2\left( \begin{pmatrix}{TBN} \\{Lj}\end{pmatrix} \right)} \right\rceil$bits are needed for a j-th group, where

$\quad\begin{pmatrix}x \\y\end{pmatrix}$denotes a number of options of selecting y numbers from x number, Lj isa number of transmission beams in the j-th group. The receiving endneeds to feed back Lj of each group to the transmitting end. Assumingthat a maximum number of beams in one group is 4, Lj of each group needs2 bits. The number of bits required by the three groups is

$\left. {{2 \times 3} + \left\lceil {\log\; 2\left( \begin{pmatrix}10 \\3\end{pmatrix} \right)} \right\rceil + \left\lceil {\log\; 2\left( \begin{pmatrix}10 \\1\end{pmatrix} \right)} \right\rceil + \left\lceil {\log\; 2\left( \begin{pmatrix}10 \\2\end{pmatrix} \right)} \right\rceil} \right) = {23\mspace{14mu}{{bits}.}}$A transmission manner set in the j-th group is {b_(i,j)−1, i=0, 1, . . ., Lj−1}, where 1≤b_(i,j)≤TBN, b_(i,j)<b_(i+1,j), a value of the

$\left\lceil {\log\mspace{14mu} 2\begin{pmatrix}{TBN} \\{Lj}\end{pmatrix}} \right\rceil$bits is

${{abbi} = {\sum\limits_{i = 0}^{{Lj} - 1}\;\left\langle \begin{matrix}{{TBN} - b_{i}} \\{{Lj} - i}\end{matrix} \right\rangle}},$where

$\left\langle \begin{matrix}x \\y\end{matrix} \right\rangle = \left\{ {\begin{matrix}{\begin{pmatrix}x \\y\end{pmatrix},{x \geq y}} \\{0,{x < y}}\end{matrix},} \right.$TBN is a total number of transmission manners, j≤N≤−1, and Lj is thenumber of transmission beams in the j-th group. Information content of23 bits is shown in table 14.

TABLE 14 Feedback Bit Index Feedback Bit Feedback Bit Content 0-1 10Number of transmission beams in transmission beam group 0-1 2-3 00Number of transmission beams in transmission beam group 1-1 4-5 01Number of transmission beams in transmission beam group 2-1  6-12 (0101)Transmission beam index set in transmission beam group 0 13-16 (0010)Transmission beam index set in transmission beam group 1 17-22 (0100)Transmission beam index set in transmission beam group 2

For the feedback manner of the three transmission and receiving beamgroups, a seventh feedback manner in the embodiment is that thereceiving end and the transmitting end agree to feed back 3 groups andeach group is represented by 10 bits. 30 bits are used to represent thethree groups and each of 10 bits in each group corresponds to onetransmission beam, a bit value of 0 indicates that no transmission beamis included in the group, and a bit value of 1 indicates that thetransmission beams are included in the group. Alternatively, the bitvalue of 1 indicates that no transmission beam is included in the group,and the bit value of 0 indicates that the transmission beams areincluded in the group. The 30 bits are shown in table 15.

TABLE 15 Feedback Bit Index Feedback Bit Feedback Bit Content 0-91101000000 Group with index 0 10-19 0000010000 Group with index 1 20-290010100000 Group with index 2

In the above implementation modes, the transmitting end and thereceiving end agree on the number of groups. If the number of groups isvariable, information on the number of groups needs to be furtherincluded in the feedback information.

In FIG. 24a , the intersection set of every two groups is empty. A casewhere the intersection set of two groups is not empty is not excluded.

Specific Embodiment 10

An implementation process in the embodiment is similar to that in thespecific embodiment 1. The feedback manner in step 4 is specificallydescribed, where the feedback manner is used by a receiving end to feedback indication information of the selected resources and indicationinformation of N first-type resource groups.

In the embodiment, a base station and a terminal agree that a number oftransmission beams in each group is the same. For example, each groupincludes L transmission beams. As shown in FIG. 24c .

${abbn} = \left\lceil {\log\; 2\left( \begin{pmatrix}{TBN} \\L\end{pmatrix} \right)} \right\rceil$bits are needed for each group, where

$\quad\begin{pmatrix}x \\y\end{pmatrix}$denotes a number of options of selecting y numbers from x number. Asshown in FIG. 10, transmission and receiving beam pairs are shown intable 16.

TABLE 16 Transmission and Receiving (Transmission Beam Index, Beam PairIndex Receiving Beam Index) 0 (0, 0) 1 (1, 0) 2 (3, 1) 3 (5, 1) 4 (2, 2)5 (4, 2)

Each group is represented by abbi in the following formula, atransmission beam index set is {b_(i)−1, i=0, 1, . . . , L−1},1≤b_(i)≤TBN and b_(i)<b_(i+1):

${abbi} = {\sum\limits_{i = 0}^{L - 1}\;\left\langle \begin{matrix}{{TBN} - b_{i}} \\{L - i}\end{matrix} \right\rangle}$

where

$\left\langle \begin{matrix}x \\y\end{matrix} \right\rangle = \left\{ {\begin{matrix}{\begin{pmatrix}x \\y\end{pmatrix},{x \geq y}} \\{0,{x < y}}\end{matrix}\mspace{14mu}{and}\mspace{14mu}\begin{pmatrix}x \\y\end{pmatrix}} \right.$denotes the number of options of selecting y numbers from x number.

As shown in table 2, in the embodiment, assuming that TBN=10 and L=2,the number of bits required for each group is

$\left\lceil {\log\; 2\left( \begin{pmatrix}10 \\2\end{pmatrix} \right)} \right\rceil = 6$and the number of bits required for three groups is 3×6=18 bits.

In the above implementation modes, only indication information of theselected first-type resources and first-type resource groups is fedback. The corresponding CQI information and the like may be further fedback for each resource or each first-type resource group, which is notexcluded in the present invention. Alternatively, specific CQI valuesare not fed back, but the resources in each first-type resource groupare arranged in the order of CQI values, or the resources are arrangedaccording to receiving performance. For example, a first resource ineach group corresponds to best receiving performance, or the firstresource in each group corresponds to worst receiving performance.

Specific Embodiment 11

An implementation process in the embodiment is similar to that in thespecific embodiment 1. The feedback manner in step 4 is specificallydescribed, where the feedback manner is used by a receiving end to feedback indication information of the selected resources and indicationinformation of N first-type resource groups. The indication informationof the selected resources and the indication information of N first-typeresource groups are referred to as feedback information below.

In the embodiment, the number of the first-type groups and the number ofresources in each first-type group may change in each feedback. Theembodiment focuses on resources used by the receiving end to transmitthe feedback information.

In a first implementation mode of the embodiment, a transmitting end andthe receiving end agree on a maximum number of groups and a maximumnumber of resources in each group. The feedback resources are allocatedaccording to a possible maximum value of the feedback information. Forexample, the feedback resources are PUCCHs, and the PUCCHs are allocatedaccording to a maximum demand.

In a second implementation mode of the embodiment, the receiving endrequests the feedback resources according to a practical amount offeedback information and the transmitting end allocates thecorresponding feedback resources according to a quantity of feedbackresources carried in request information. For example, when thereceiving end determines that the current feedback information occupies24 bits, the receiving end sends the request information to thetransmitting end. The request information carries 24-bit information orinformation that 24 bits are within a length area. For example, thetransmitting end and the receiving end agree that a number of bits in alength area 1 is within {1-15} and the number of bits in a length area 2is within {16-30}, and the receiving end feeds back the length area 2.The transmitting end allocates the resources to the receiving endaccording to length-related information fed back by the receiving end,where the resources are used for transmitting the feedback information,and the receiving end sends the feedback information to the transmittingend on the allocated resources.

In a third implementation mode of the embodiment, the receiving endperforms feedback by using multiple feedback resources, where themultiple feedback resources are allocated by the transmitting end to thereceiving end. Each feedback resource has a flag at an end of thefeedback resource, the flag indicates whether the first-type groupingindication information is fed back completely. If not, the receiving endcontinues to transmit the feedback information on subsequent feedbackresources. Preferably, for example, if the number of first-type groupsis 5, the feedback information is sent on 5 continuous feedbackresources. The number of first-type groups is 3, and the feedbackinformation is sent on three continuous feedback resources. Thecontinuous feedback resources indicate that the feedback information iscontinuously sent on the multiple feedback resources allocated to thetransmitting end. The multiple feedback resources may be discrete intime domain and are agreed by the transmitting end and the receiving end(of course, the following case is not excluded in the embodiment,higher-level feedback information is reported on some of thediscontinuous PUCCH resources allocated to the receiving end are notexcluded in the embodiment). As shown in FIG. 24e , the receiving end(such as the terminal) feeds back the grouping indication information onthree uplink feedback resources and the grouping indication informationon each feedback resource indicates whether the first-type groupingindication information is fed back completely. That is, there is amapping relationship between the number of groups and resourceinformation for transmitting the feedback information.

Specific Embodiment 12

In the embodiment, a transmitting end sends second-type groupingindication information as signaling information to a receiving end andthe receiving end acquires a transmission parameter and/or a receptionparameter corresponding to a transmission signal according to thesecond-type grouping indication information, and/or receives theparameter and then receives and demodulates a signal transmitted by thetransmitting end. The second-type grouping indication informationincludes one or more of: information on a group index set, groupingmanner indication information and information on resources included in agroup. The group index set includes at least one group index. Thesecond-type grouping indication information may be the signalinginformation transmitted by the transmitting end to the receiving end ina transmission phase after receiving the feedback information from thereceiving end in the embodiment 2.

In the above implementation mode, the signaling information may bedynamic signaling information or semi-static signaling information. Thetransmission signal may be transmitted only for acquiring thetransmission parameter and/or the reception parameter of a signal in atime unit (such as a subframe) where the signaling information islocated, and the transmission signal may also be multiple time unitswhich start from an interval Ntime0 after the time unit where thesignaling information is located, where Ntime0 may be 0, indicating thatthe time unit where the signaling information is located is included.That is, the signaling information indicates that the transmitting endwill switch the transmission parameter and/or the receiving end needs toswitch the reception parameter. A switched parameter is applicable to atleast one of the following transmission signals: a control channel, adata channel and a reference signal.

As shown in FIG. 24d , the second-type grouping indication informationis indicated in a dynamic control domain, and the receiving end acquiresdata sent to the receiving end in a data domain according to thesecond-type grouping indication information.

The transmission parameter includes at least one of: a receiving mannerfor receiving the signal, an MCS set corresponding to the signal, amultiplexing manner set used by the signal, a length of a CPcorresponding to the signal, a number of space division multiplexinglayers used by the signal, demodulation reference signal portinformation used by the signal, quasi-co-located reference signalresource information corresponding to the signal, structural informationcorresponding to the signal. The structural information includes atleast one of: a CP length of a start symbol of a time unit, anindication whether the start symbol of the time unit includes asynchronization signal and a CP length of a last symbol of the timeunit. The signal is a transmission signal corresponding to thesecond-type grouping indication information. For example, in FIG. 24d ,the transmission signal is data information of the receiving end in thedata domain corresponding to the signaling information; or thetransmission signal is the control channel corresponding to thesignaling information; or the transmission signal is the referencesignal corresponding to the signaling information, where the referencesignal may be a measurement reference signal or a data demodulationreference signal.

A grouping manner includes at least one of: grouping according to areceiving resource corresponding to a resource, grouping according to achannel quality corresponding to the resource, grouping according to arecommended multiplexing manner, grouping according to a TA parameter,grouping according to a CP length, grouping according to a spacedivision multiplexing manner, grouping according to a quasi-co-locationrelationship and grouping according to an uplink measurement referencesignal transmitted by the receiving end. The receiving resource includesat least one of: a receiving beam, a receiving antenna, a receivingport, a receiving precoding matrix, receiving time, receivingfrequency-domain resource, a receiving sector and a receiving sequence.

For example, the receiving end feeds back groups 0, 1 and 2, differentgroups correspond to different receiving manners, and the receiving endcan only generate one receiving manner corresponding to one group ateach time instant. The different groups correspond to differentreceiving manners, if grouping information indicates that a group indexis 0, the receiving end receives the data in a receiving mannercorresponding to a group 0. Equivalently, the second-type groupingindication information corresponds to receiving manner indicationinformation or indication information of a receiving beam set.

For example, the receiving end feeds back the groups 0, 1 and 2, thedifferent groups correspond to the different receiving manners, and thereceiving end can generate receiving manners corresponding to all thegroups at each time instant. The different groups correspond to thedifferent receiving manners, if the grouping information indicates thatthe group index is 1 in the transmission phase after feedback, thereceiving end receives the data in a receiving manner corresponding to agroup 1. If the grouping information indicates a group index set {1, 2},the receiving end receives the data in receiving manners correspondingto groups {1, 2}. For example, the groups a and 2 correspond toreceiving antennas a and 2, the receiving end receives the data usingthe receiving antennas a and 2. Equivalently, the second-type groupingindication information corresponds to the receiving manner indicationinformation or indication information of the receiving beam set orreceiving antenna indication information.

For example, the receiving end feeds back the grouping information shownin table 7 and signals corresponding to the different groups hasdifferent arrival areas. As shown in FIG. 22b , if the groupinginformation indicates that the group index is 0 in the transmissionphase, the transmitting end and the receiving end agree to use CP1. Ifthe grouping information indicates that the group index set is {0, 3} inthe transmission phase, the transmitting end and the receiving end agreeto use 4CP1, that is, the receiving end obtains a CP length of thesignal according to the grouping information.

After the transmitting end sends the second-type grouping indicationinformation to the receiving end, the receiving end learns aquasi-co-located reference signal corresponding to the signal accordingto group index information, where the signal may be a demodulationreference signal or the measurement reference signal. A correspondencebetween the signal and the group index is established. Thecorrespondence is agreed by the transmitting end and the receiving end.For example, one group index corresponds to one signal group whichincludes at least one signal. All signals in the one signal group mayacquire a QCL characteristic by using resources included in the groupindex fed back by the receiving end. For example, a first-type groupwith index 0 which is fed back by the receiving end includes{measurement reference signal 0, measurement reference signal 1}, if thetransmitting end indicates the group index 0 in the second-type groupingindication information, the receiving end may acquire QCL information ofall signals in a signal group corresponding to the group index 0 byusing the {measurement reference signal 0, measurement reference signal1}. Specifically, the receiving end may acquire QCL information of alldemodulation reference signals in a demodulation reference signal groupcorresponding to the group index 0 by using the {measurement referencesignal 0, measurement reference signal 1} and/or the receiving end mayacquire QCL information of all measurement reference signals in ameasurement reference signal group (the measurement reference signalcorresponds to the second-type grouping indication information)corresponding to the group index 0 by using the {measurement referencesignal 0, measurement reference signal 1}.

After the transmitting end sends the second-type grouping indicationinformation to the receiving end, the receiving end learns thedemodulation reference signal port information corresponding to thesignal according to the group index information. The demodulationreference signal port information includes a number of demodulationreference ports and demodulation reference ports. For example, one groupindex corresponds to one demodulation reference signal group and thecorrespondence is agreed by both parties. All demodulation referencesignals in one demodulation reference signal group are quasi-co-located,and large-scale demodulation of the demodulation reference signals maybe jointly obtained. Other transmission parameters and receptionparameters are acquired according to the grouping information in mannersas described above, which are not repeated here. Furthermore, if thereare multiple grouping manners and each grouping manner corresponds todifferent grouping indication information. The grouping manner may befurther notified in the grouping information so that the receiving endobtains the transmission parameter and/or the reception parameter byusing correspondences between the group index and the transmissionparameter and/or the reception parameter in a corresponding groupingmanner.

The grouping information in FIG. 24d is notified and acquired by dynamicsignaling. A case where the grouping information is notified bysemi-static higher-layer signaling or a system message is not excludedin the present invention. Alternatively, signaling notification andagreed rules may be combined. In FIG. 24d , a position of the groupinginformation in the control domain is only an example and otheroccupation manners are not excluded in the present invention. Theoccupation of a data signal of the receiving end in the data domain isalso only an example and other occupation manners are not excluded.

In the above implementation modes, the correspondences between the groupindex and the transmission parameter and/or the reception parameter areobtained through feedback information fed back by the receiving end. Thefeedback information includes first-type grouping indicationinformation. The transmitting end and the receiving end obtain thecorrespondences by acquiring the second-type grouping indicationinformation according to the first-type grouping indication informationaccording to an agreed rule. A case where the correspondences betweenthe group index and the transmission parameter and/or the receptionparameter are pre-agreed by both parties is not excluded in theembodiment. Specifically, in a first manner, a correspondence betweenthe group index and the transmission parameter and/or a correspondencebetween the group index and the reception parameter are obtainedaccording to the first-type grouping indication information fed back bythe receiving end. In a second manner, the transmitting end transmitsthe correspondences to the receiving end. In a third manner, thetransmitting end obtains the correspondences according to the uplinkmeasurement reference signal sent by the receiving end. Specifically, ina third implementation mode, the transmitting end (such as a basestation) indicates the group index such as an index of the uplinkmeasurement reference signal in the second-type grouping indicationinformation according to groups of uplink measurement reference signalssent by the terminal. For example, the receiving end (such as theterminal) sends Nup uplink measurement reference signals (such as an SRSor other equivalent names), where N is an integer greater than or equalto 1. The transmitting end (such as the base station) sends thesecond-type grouping indication information to the terminal, where thesecond-type grouping indication information includes indexes of Mupmeasurement reference signals in the Nup uplink measurement referencesignals, where Mup is an integer less than or equal to Nup. The terminalobtains, according to the indexes of Mup measurement reference signals,the following information: a receiving manner for receiving a signalsent by the base station and a transmission manner for transmitting asignal to the base station. For example, the signal sent by the basestation is received in a receiving manner obtained according to atransmission manner of the uplink measurement reference signal, (forexample, uplink and downlink reciprocity is used). The uplinkmeasurement reference signal includes one of: an uplink demodulationreference signal, an SRS signal, an uplink CSI-RS or other equivalentnames. In short, the uplink measurement reference signal is a channelmeasurement reference signal transmitted by the terminal to the basestation.

In another implementation mode of the embodiment, the second-typegrouping indication information sent by the transmitting end includesthe information on the resources included in the group. The informationon the resources is information on reference signals. The referencesignals include one of: the demodulation reference signal and themeasurement reference signal. Preferably, resources in a same group havea same channel characteristic and/or quasi-co-location information.

In an implementation mode of the embodiment, the transmitting endindicates the group index and the receiving end obtains measurementreference signal-related configuration according to the group index, forexample, a port number of the measurement reference signal, a number ofports and the like are obtained according to the group index.Alternatively, the group index and the information on the resourcesincluded in the group are notified so that the receiving end may performfurther beam training.

The QCL information may also be channel characteristic information orother equivalent nouns. The channel characteristic information or theQCL information includes at least one of the following information of areference signal: Doppler spread, Doppler shift, an average gain, anaverage delay, average angle spread and an angle-of-arrival.Alternatively, two quasi co-located resources mean that large-scaleinformation obtained with one resource may be used for large-scaleinformation of the other resource. The large-scale information includesat least one of Doppler spread, Doppler shift, the average gain, theaverage delay, average angle spread and an angle-of-arrival.

In another implementation mode of the embodiment, the second-typegrouping indication information is not notified by signaling but in amanner of being multiplexed with another signal such as notification bya sequence. For example, the second-type grouping indication informationis implicitly notified through a port of the reference signal or ascrambling manner.

Specific Embodiment 13

The embodiment is similar to the specific embodiment 12. However, in thespecific embodiment 12, a terminal acquires a transmission parameterand/or a reception parameter corresponding to a signal transmitted by abase station according to second-type grouping indication informationtransmitted by the base station. In the embodiment, the terminal obtainsa transmission parameter of an uplink signal transmitted by the terminalto the base station and/or a reception parameter and/or a transmissionparameter for receiving the signal transmitted by the base stationaccording to the second-type grouping indication information transmittedby the base station.

In a first implementation mode of the embodiment, a transmitting end(such as the base station) groups downlink transmission beams accordingto an uplink measurement reference signal transmitted by the terminal,indicates a group index such as an index of the uplink measurementreference signal in the second-type grouping indication information.Specifically, a receiving end (such as the terminal) sends Nup uplinkmeasurement reference signals (such as an SRS or other equivalentnames), where N is an integer greater than or equal to 1. Thetransmitting end (such as the base station) sends the second-typegrouping indication information to the terminal, where the second-typegrouping indication information includes indexes of Mup measurementreference signals in the Nup uplink measurement reference signals, whereMup is an integer less than or equal to Nup. The terminal obtains,according to the indexes of Mup measurement reference signals, thefollowing information: a receiving manner for receiving a signal sent bythe base station and a transmission manner for transmitting a signal tothe base station. For example, the signal sent by the base station isreceived in a receiving manner obtained according to a transmissionmanner of the uplink measurement reference signal, (for example, uplinkand downlink reciprocity is used) and the signal is sent to the basestation in the transmission manner of the uplink measurement referencesignal. The uplink measurement reference signal includes one of: anuplink demodulation reference signal, an SRS signal, an uplink CSI-RS orother equivalent names. In short, the uplink measurement referencesignal is a channel measurement reference signal transmitted by theterminal to the base station.

In a second implementation mode of the embodiment, the terminal groupsmeasurement reference signals sent by the base station according toreceiving resources, obtains information on N first-type groups, andfeeds back first-type grouping indication information to the basestation. According to the uplink and downlink reciprocity, the basestation considers that an optimal downlink receiving beam of theterminal is an optimal uplink transmission beam and/or an optimaltransmission beam of the base station corresponding to a downlink of theterminal is an optimal receiving beam used by the base station toreceive the signal transmitted by the terminal in an uplink. Therefore,group index information in the second-type grouping indicationinformation notifies the terminal of at least one of: the receivingmanner for receiving the signal sent by the base station (the signalsent by the base station is received in a receiving manner correspondingto the group index) and the transmission manner for transmitting thesignal to the base station (an uplink signal is transmitted to the basestation in a transmission manner obtained using the uplink and downlinkreciprocity according to the receiving manner corresponding to the groupindex).

In the embodiment, the signal sent to the base station includes: a datachannel signal, a control channel signal and a reference signal such asa measurement reference signal (such as an SRS), a demodulationreference signal and a resource request reference signal.

Specific Embodiment 14

In the embodiment, a first-type resource group or a second-type resourcegroup may be embodied in an implicit manner.

For example, the first-type resource group is associated with a process.Specifically, the process includes a channel state information (CSI)process or a CSI subprocess. One CSI process includes one or more CSIsubprocesses.

The first-type resource groups are divided according to the process.Preferably, resources corresponding to resource indexes fed back in asame process belong to a same group and correspond to one Rx beamsetting. A terminal may select the process and report indicationinformation of one or more processes. Alternatively, resourcescorresponding to resource indexes fed back in a same process groupbelong to a same group and correspond to one Rx beam setting. Theterminal may select the process group and report indication informationof one or more process groups. The first-type resource groups aredivided according to the subprocess or threads. Preferably, resourcescorresponding to resource indexes fed back in a same subprocess/threadsbelong to a same group and correspond to one Rx beam setting. Theterminal may select the subprocess/threads and report indicationinformation of one or more processes. Alternatively, resourcescorresponding to resource indexes fed back in a same subprocess/threadsgroup belong to a same group and correspond to one Rx beam setting. Theterminal may select the subprocess/threads group and report indicationinformation of one or more subprocess/threads groups.

The first-type resource group is associated with a set. The set includesat least one of CSI reporting settings (a CSI reporting set), Resourcesettings (a resource set), CSI measurement settings (a CSI measurementset) and links (a link set). The CSI measurement set includes one ormore links, each of which is used for establishing a relationshipbetween the resource set and the CSI reporting set. Preferably, one linkincludes one resource set and one CSI reporting set.

Specifically, for example, one first-type resource group (or second-typeresource group) correspond to one link and the terminal may select oneor more links from multiple links to report the one or more links.

In an optional implementation mode of the embodiment, one first-typeresource group corresponds to one Rx beam setting and a base stationconfigures multiple Rx beam settings in at least one of the above sets(the CSI reporting set, the resource set, the CSI measurement set andthe link set), or the base station and the terminal agree the multipleRx beam settings. The terminal selects one or more Rx beam settings fromthe multiple Rx beam settings for reporting. Specifically, for example,the base station configures one or more Rx beam settings for one RSresource and the terminal selects from the multiple Rx beam settings.Alternatively, the base station and the terminal agree that one RSresource corresponds to multiple Rx beam setting and the terminalselects from the multiple Rx beam settings. A receiving manner or areceiving resource in the embodiments of the present invention includesat least one of: a receiving beam, a receiving antenna, a receivingport, a receiving precoding matrix, receiving time, receivingfrequency-domain resource, a receiving sector and a receiving sequence.A transmission manner or a transmission resource includes at least oneof: a transmission beam, a transmission antenna, a transmission port, atransmission precoding matrix, transmission time, transmission frequencydomain, a transmission sector and a transmission sequence. The receivingmanner is the receiving time, which indicates that a transmitting endrepeatedly transmits a same transmission beam multiple times so that areceiving end may search receiving beams. At this time, differentreceiving beams correspond to indexes in repetition times. Specifically,as shown in FIG. 24f , the transmitting end repeatedly transmits thesame transmission beam twice. A first scanning unit corresponds to afirst receiving manner, a second scanning unit corresponds to a secondreceiving manner, and the receiving end feeds back one first-typeresource group for each scanning unit. Alternatively, which scanningunit is notified in the first-type resource group. Alternatively, tworepetitions of the same transmission beam are considered as differentlogical numbers in logical beam numbers. In this case, the receiving endonly needs to group logical beams, For example, 2N*x1 logical beams areformed in 2N time domain units in FIG. 24f or 2N*x1 logical beams areformed in 2N time domain units in FIG. 24g , where x1 is a number ofbeam ports included in each time domain unit. The transmitting endperiodically transmits a measurement reference signal and the receivingend switches receiving beams at different periods. When the logicalbeams are numbered in a same scanning unit, the receiving end groups thelogical beams according to the receiving beams.

In the embodiment, data in a transmission phase after feedback includestraffic data and/or a reference signal.

In the embodiment, it may be agreed that only one resource is includedin each first-type resource group.

In the embodiment, the measurement reference signal may also be a beamreference signal (BRS), a beam refinement reference signal (BRRS) orother equivalent names. In short, the measurement reference signal is areference signal of a measurement channel state which includes a beamstate. Specific names are not intended to limit the present invention.

From the description of the embodiments described above, it will beapparent to those skilled in the art that the methods in the embodimentsdescribed above may be implemented by software plus a necessarygeneral-purpose hardware platform, or may of course be implemented byhardware. However, in many cases, the former is a preferredimplementation mode. Based on this understanding, the solutions providedby the present invention substantially, or the part contributing to theexisting art, may be embodied in the form of a software product. Thecomputer software product is stored in a storage medium (such as aread-only memory (ROM)/random access memory (RAM), a magnetic disk or anoptical disk) and includes several instructions for enabling a terminaldevice (which may be a mobile phone, a computer, a server, a networkdevice or the like) to execute the methods according to each embodimentof the present invention.

The embodiments of the present invention further provide a device forfeeding back grouping indication information, a device for acquiring asignal parameter, a signal transmission device and a device fortransmitting a signal parameter, which are used for implementing theabove-mentioned embodiments and preferred embodiments. What has beendescribed will not be repeated. As used below, the term “module” may besoftware, hardware or a combination thereof capable of implementingpredetermined functions. The devices in the embodiments described beloware preferably implemented by software, but implementation by hardwareor by a combination of software and hardware is also possible andconceived.

FIG. 25 is a block diagram of a device for feeding back groupingindication information according to an embodiment of the presentinvention. As shown in FIG. 25, the device includes a first determiningmodule 252 and a first transmitting module 254. The device is describedbelow.

The first determining module 252 is configured to determine M resourcesfrom a candidate resource set and divide the M resources into Nfirst-type resource groups, where M is an integer greater than or equalto 1 and N is a positive integer less than or equal to M. The firsttransmitting module 254 is configured to feed back indicationinformation for indicating the M resources and first-type groupingindication information for indicating that the M resources are dividedinto the N first-type resource groups to a first communication node.

In an optional embodiment, the first determining module 252 maydetermine the M resources from the candidate resource set in the mannersdescribed below. The candidate resource set is determined, where thecandidate resource set includes Q second-type resource groups, where Qis an integer greater than or equal to 1. A transmission signaltransmitted on the candidate resource set is received. The M resourcesare determined from the candidate resource set according to the receivedtransmission signal.

In an optional embodiment, the Q second-type resource groups in thecandidate resource set are divided according to at least one of thefollowing resource types: a beam resource, an antenna resource, a portresource, a frequency domain resource, a transmission sequence resourceand a time domain resource. In the embodiment, different beam resourcesmay be different second-type resource groups; different port resourcesmay be different second-type resource groups; or differenttime/frequency resources may be different second-type resource groups;different sequence resources may be different second-type resourcegroups; different beam and port resources may be different second-typeresource groups; or different beam and time/frequency resources may bedifferent second-type resource groups. Optionally, the above resourcesare used for at least one of: receiving/transmitting a synchronizationsignal, receiving/transmitting a data signal, receiving/transmitting acontrol signal and receiving/transmitting a pilot signal.

In an optional embodiment, the first determining module 252 maydetermine the M resources from the candidate resource set by determiningthe M resources from the candidate resource set according to a channelquality and/or a signal quality of each resource in the candidateresource set.

In an optional embodiment, at least one of the following is included:resources in a same first-type resource group belong to one or more ofthe Q second-type resource groups, for example, one Channel StateInformation-Reference Signal (CSI-RS) resource corresponds to onesecond-type resource group and multiple ports in the one CSI-RS resourcecorrespond to resources included in the one second-type resource group;the resources in the same first-type resource group may be composed ofports in one or more CSI-RS resources. Preferably, different CSI-RSresources correspond to different transmission nodes and different portsin a same CSI-RS resource may correspond to different transmission beamsof the transmission node. Resources in a same second-type resource groupbelong to one or more of the N first-type resource groups. For example,assuming that transmission beams {1, 2, 3, 4, 5} constitute thecandidate resource set and each transmission beam is one second-typeresource group, when the transmission beams are divided into twofirst-type resource groups, transmission beams {1, 2, 3} may be onefirst-type resource group and transmission beams {1, 4, 5} may be theother first-type resource group. In this case, a transmission beam maycorrespond to multiple first-type resource groups. An intersection setof different resource groups among the N first-type resource groups isnot an empty set.

In an optional embodiment, the first transmitting module 254 may dividethe M resources into the N first-type resource groups in at least one ofthe following manners: dividing the M resources into the N first-typeresource groups according to receiving resources corresponding to the Mresources; dividing the M resources into the N first-type resourcegroups according to a signal quality on each of the M resources or achannel quality corresponding to the each of the M resources; dividingthe M resources into the N first-type resource groups according to apredetermined multiplexing manner; dividing the M resources into the Nfirst-type resource groups according to a timing advance (TA) parameter;dividing the M resources into the N first-type resource groups accordingto a length of a cyclic prefix (CP); dividing the M resources into the Nfirst-type resource groups according to a quasi-co-locationrelationship; dividing the M resources into the N first-type resourcegroups according to grouping configuration information; and dividing theM resources into the N first-type resource groups according to a channelcharacteristic. In the embodiment, the predetermined multiplexing mannermay include a recommended multiplexing manner, may also include ageneral multiplexing manner, and may also include a space multiplexingmanner.

In an optional embodiment, the first transmitting module 254 may dividethe M resources into the N first-type resource groups according to thepredetermined multiplexing manner by dividing the M resources into the Nfirst-type resource groups according to the space division multiplexingmanner, where resources not supporting space division multiplexing aregrouped into a same first-type resource group, resources supporting thespace division multiplexing are grouped into different first-typeresource groups, and a number of first-type resource groups is greaterthan or equal to a maximum number of space division multiplexing layers;or the resources supporting the space division multiplexing are groupedinto a same first-type resource group, the resources not supporting thespace division multiplexing are grouped into different first-typeresource groups, and a number of space division multiplexing layers ofthe resources in the same first-type resource group is less than orequal to a number of resources in the same first-type resource group.

In an optional embodiment, at least one of the characteristics describedbelow is further included. Resources in a same first-type resource grouphave same one or more types of receiving resources, or the resources inthe same first-type resource group have one or more types of receivingresources, which have a difference less than a predetermined threshold(for example, a correlation between receiving sequences is less than anagreed threshold and/or a correlation between receiving beams is lessthan the agreed threshold). The receiving resources include at least oneof: a receiving antenna resource, a receiving port resource, a receivingweight resource, a receiving sector resource, a receiving sequenceresource, a receiving time domain resource, a receiving frequency-domainresource and a receiving beam resource Channel qualities correspondingto the resources in the same first-type resource group have a differenceless than or equal to a threshold R1, and channel qualitiescorresponding to resources in different first-type resource groups havea difference greater than a threshold R2, where R1 or R2 is pre-agreedwith the first communication node (R1 or R2 may be pre-agreed by thefirst communication node and the second communication node) orconfigured by signaling from the first communication node (R1 and R2 maybe the same). Receiving signal qualities corresponding to the resourcesin the same first-type resource group have a difference less than orequal to a threshold r1, and receiving signal qualities corresponding tothe resources in different first-type resource groups have a differencegreater than a threshold r2, where r1 or r2 is pre-agreed with the firstcommunication node or configured by signaling from the firstcommunication node (r1 and r2 may be the same). A multiplexing mannerset used for transmitting signals on the resources in the samefirst-type resource group is a set A, and a multiplexing manner set usedfor transmitting the signals on the resources in different first-typeresource groups is a set B, where the set B is a true subset of the setA or the set A is a true subset of the set B (the set A and the set Bare different sets). TA parameters used for transmitting the signal onthe resources in the same first-type resource group have a differenceless than or equal to a threshold T1, and TA parameters used fortransmitting the signal on the resources in different first-typeresource groups have a difference greater than a threshold T2, where T1or T2 is pre-agreed with the first communication node or configured bysignaling from the first communication node or determined according to aconfiguration of the CP (T1 and T2 may be the same). The CP length usedfor transmitting the signal on the resources in the same first-typeresource group is less than or equal to t1, and the CP length used fortransmitting the signal on the resources in different first-typeresource groups is greater than t2, where t1 or t2 is pre-agreed withthe first communication node or configured by signaling from the firstcommunication node (t1 and t2 may be the same). The resources indifferent first-type resource groups correspond to different CP lengths.The resources in the same first-type resource group correspond to a sameCP length. Transmission signals corresponding to the resources in thesame first-type resource group are not allowed to be space divisionmultiplexed. Transmission signals corresponding to the resources indifferent first-type resource groups are allowed to be space divisionmultiplexed. The number of first-type resource groups is equal to amaximum number of transmission layers in space division multiplexing.The transmission signals corresponding to the resources in the samefirst-type resource group are quasi-co-located. The resources in thesame first-type resource group have a same channel characteristic. Achannel characteristic of a resource in each of the N first-typeresource groups is acquirable according to a channel characteristic ofanother resource in the each of the N first-type resource groups.

In an optional embodiment, at least one of the characteristics describedbelow is included. The grouping configuration information includes atleast one of: grouping restriction indication information, a thresholdparameter for determining groups and a parameter for determining agrouping rule; and the grouping configuration information is configuredby signaling from the first communication node or pre-agreed with thefirst communication node. The transmission signals corresponding to theresources in the same first-type resource group are allowed to be spacedivision multiplexed. The transmission signals corresponding to theresources in different first-type resource groups are not allowed to bespace division multiplexed. A number of space division multiplexinglayers of the transmission signals corresponding to the resources in thesame first-type resource group is less than or equal to a number ofresources in the same first-type resource group.

In an optional embodiment, the grouping restriction indicationinformation includes the following: a number of resources in the samefirst-type resource group is less than or equal to a, and the number Nof first-type resource groups is less than or equal to b, where both aand b are natural numbers greater than or equal to 1; or the number ofresources in the same first-type resource group is a fixed number a, andthe number N of first-type resource groups is a fixed number b, whereboth a and b are the natural numbers greater than or equal to 1.

In an optional embodiment, the device further includes an agreeingmodule. The agreeing module is configured to agree with the firstcommunication node that the N first-type resource groups have at leastone of the characteristics described below. The same first-type resourcegroup corresponds to a same set of TA parameters. The same first-typeresource group corresponds to a same set of CP parameters. Whendifferent resources are transmitted simultaneously, CP lengthscorresponding to the different resources are determined according to amaximum value of absolute values of differences of resource groupindexes of first-type resource groups corresponding to the differentresources. Different first-type resource groups correspond to differentCP parameters. Resources in the same first-type resource groupcorresponds to a same receiving resource. Different first-type resourcegroups correspond to different receiving resources, and the differentreceiving resources are generated in a time division manner (thedifferent receiving resources corresponding to the different first-typeresource groups may be generated in the time division manner by thesecond communication node which may perform the steps of determining theM resources and feeding back the indication information for indicatingthe M resources and the first-type grouping indication information forindicating that the M resources are divided into the N first-typeresource groups to the first communication node). At least one type ofchannel or signal state parameter corresponding to the same first-typeresource group is the same. The resources in the same first-typeresource group are allowed to be frequency division multiplexed and/orspace division multiplexed and/or time division multiplexed (a timedivision multiplexing manner is preferable for the same first-typeresource group). The resources in different first-type resource groupsdo not support frequency division multiplexing or space divisionmultiplexing and only support time division multiplexing. The resourcesin the same first-type resource group correspond to a same indexindication parameter.

In an optional embodiment, channel parameters being the same or signalstate parameters being the same includes at least one of: rankindicators (RI) being the same; reference signal received powers (RSRP)being the same; channel quality indications (CQI) being the same;receiving signal-to-noise ratios (SNR) being the same; precoding matrixindicators (PMI) being the same; and channel reference signals (CRI)being the same, and/or a same index corresponding to the resources inthe same first-type resource group includes at least one of: a receivingbeam index, a receiving sector index, a receiving antenna index, areceiving sequence index, a receiving port index and a receiving beamcombination index.

In an optional embodiment, the agreeing module is further configured toagree with the first communication node on the following characteristic:a capability of simultaneously generating receiving mannerscorresponding to all the N first-type resource groups is possessed.

In an optional embodiment, the agreeing module is further configured toagree with the first communication node that the N first-type resourcegroups have one of the characteristics described below. The resources inthe same first-type resource group are not allowed to be space divisionmultiplexed, the resources in different first-type resource groups areallowed to be space division multiplexed, and the maximum number ofspace division multiplexing layers is equal to the number of first-typeresource groups. The resources in the same first-type resource group areallowed to be space division multiplexed, the resources in differentfirst-type resource groups are not allowed to be space divisionmultiplexed, and the number of space division multiplexing layers of theresources in the same first-type resource group is less than or equal tothe number of resources in the same first-type resource group.

In an optional embodiment, at least one of the characteristics describedbelow is included. In the first-type grouping indication information,resources in each of the N first-type resource groups are sequentiallyarranged according to receiving qualities of the resources. Thefirst-type grouping indication information includes at least one of: thenumber of the groups, indication on resources in each of the Nfirst-type resource groups, information on a number of resources in eachof the N first-type resource groups, grouping manner indicationinformation, group index information and information on a commonparameter corresponding to each of the N first-type resource groups. Thefirst-type grouping indication information includes a plurality oflevels of groups. The first-type grouping indication informationincludes two levels of groups and one first-level group includes aplurality of second-level groups, where the second communication nodeconfigured to divide the M resources into the N first-type resourcegroups has a capability of simultaneously generating receiving resourcescorresponding to different first-level groups or all first-level groupsand generating, in a time division manner, different receiving resourcescorresponding to the plurality of second-level groups in a samefirst-level group, or a capability of generating, in the time divisionmanner, receiving resources corresponding to resources in the differentfirst-level groups and simultaneously generating receiving resourcescorrespond to different second-level groups or all second-level groupsincluded in the same first-level group. In an optional embodiment, atleast one of the characteristics described below is included.

The number of the groups information has a mapping relationship withinformation on resources for transmitting the indication information andthe first-type grouping indication information. The information on theresources in each of the N first-type resource groups, where theinformation on the resources includes at least one of: index informationof the resources in the candidate resource set and CQI informationcorresponding to each of the resources. The common parametercorresponding to each of the N first-type resource groups includes atleast one of the following parameters: a CP length corresponding to eachof the N first-type resource groups, a PMI corresponding to each of theN first-type resource groups, an RI corresponding to each of the Nfirst-type resource groups, a CQI corresponding to each of the Nfirst-type resource groups, a TA parameter corresponding to each of theN first-type resource groups, a quasi-co-location parametercorresponding to each of the N first-type resource groups, and areceiving resource corresponding to each of the N first-type resourcegroups. A resource index set of resources in a j-th first-type resourcegroup in the first-type grouping indication information is {b_(i,j)−1,i=0, 1, . . . , Lj−1}, where 1≤b_(i,j)≤TBN, b_(i,j)<b_(i+1,j), theresource index set is denoted with

$\left\lceil {\log\mspace{14mu} 2\begin{pmatrix}{TBN} \\{Lj}\end{pmatrix}} \right\rceil$bits, a value of the

$\left\lceil {\log\mspace{14mu} 2\begin{pmatrix}{TBN} \\{Lj}\end{pmatrix}} \right\rceil$bits is

${{abbi} = {\sum\limits_{i = 0}^{{Lj} - 1}\;\left\langle \begin{matrix}{{TBN} - b_{i}} \\{{Lj} - i}\end{matrix} \right\rangle}},$where

$\left\langle \begin{matrix}x \\y\end{matrix} \right\rangle = \left\{ {\begin{matrix}{\begin{pmatrix}x \\y\end{pmatrix},{x \geq y}} \\{0,{x < y}}\end{matrix},} \right.$TBN is a total number of resources in the candidate resource set,0≤j≤N−1, N is a number of first-type resource groups, Lj is a number ofresources in the j-th first-type resource group and

$\quad\begin{pmatrix}A \\B\end{pmatrix}$denotes a number of different combinations of selecting B numbers from Anumber.

In an optional embodiment, N satisfies one of the followingcharacteristics: N is a first agreed value; and N is less than or equalto N_max, where N_max is a second agreed value (which may a value agreedby the first communication node and the second communication node).

In an optional embodiment, the device further includes a feedbackmodule. The feedback is configured to feed back a maximum number ofsimultaneously generatable different receiving resources correspondingto different first-type resource groups to the first communication node.

In an optional embodiment, the resources in the candidate resource setare used for at least one of: receiving and/or transmitting thesynchronization signal; receiving and/or transmitting the data signal;receiving and/or transmitting the control signal; and receiving and/ortransmitting the pilot signal.

In an optional embodiment, different first-type resource groups includea same number of resources or different numbers of resources.

In an optional embodiment, one of the characteristics described below isincluded. The resources in the same first-type resource group are notallowed to be space division multiplexed and the resources in differentfirst-type resource groups are allowed to be space division multiplexed.The resources in the same first-type resource group are allowed to bespace division multiplexed and the resources in different first-typeresource groups are not allowed to be space division multiplexed.

In an optional embodiment, one of the characteristics described below isincluded. A maximum number of space division multiplexing layersavailable to the resources in the same first-type resource group is lessthan or equal to a maximum number of space division multiplexing layersavailable to the resources in different first-type resource groups. Themaximum number of space division multiplexing layers available to theresources in the same first-type resource group is greater than or equalto the maximum number of space division multiplexing layers available tothe resources in different first-type resource groups. The maximumnumber of space division multiplexing layers available to the resourcesin the same first-type resource group is less than the maximum number ofspace division multiplexing layers available to the resources indifferent first-type resource groups. The maximum number of spacedivision multiplexing layers available to the resources in the samefirst-type resource group is greater than the maximum number of spacedivision multiplexing layers available to the resources in differentfirst-type resource groups.

In an optional embodiment, one of the characteristics described below isincluded. The resources in the same first-type resource group supportsimultaneous reception. The resources in different first-type resourcegroups do not support simultaneous reception. The resources in the samefirst-type resource group support simultaneous reception and theresources in different first-type resource groups do not supportsimultaneous reception. The resources in the same first-type resourcegroup support simultaneous reception and the resources in differentfirst-type resource groups support simultaneous reception.

In an optional embodiment, the device included one of the mannersdescribed below. The resources in different first-type resource groupsdo not support simultaneous reception. The resources in the samefirst-type resource group do not support simultaneous reception. Theresources in different first-type resource groups support simultaneousreception and the resources in the same first-type resource group do notsupport simultaneous reception. The resources in different first-typeresource groups support simultaneous reception and the resources in thesame first-type resource group support simultaneous reception.

In an optional embodiment, the device includes at least one of thefollowing manners: the N first-type resource groups are associated witha channel measurement related process; and the N first-type resourcegroups are associated with a channel measurement related set.

In an optional embodiment, the channel measurement related process is achannel state information (CSI) process; and the channel measurementrelated set includes at least one of a CSI reporting set (CSI reportingsettings), a resource set (Resource settings), a CSI measurement set(CSI measurement settings), a link set (link settings), and a referencesignal (RS) set (RS settings), where the CSI measurement set includesone or more links, each of which is used for establishing a relationshipbetween the resource set and the CSI reporting set.

FIG. 26 is a block diagram of a device for acquiring grouping indicationinformation according to an embodiment of the present invention. Asshown in FIG. 26, the device includes a first acquisition module 262.The device is described below.

The first acquisition module 262 is configured to acquire second-typegrouping indication information. The second-type grouping indicationinformation includes at least one of: information on a group index set,grouping manner indication information, information on resources in agroup, where the group index set includes at least one group index.

In an alternative embodiment, the device further includes a firstprocessing module. The first processing module is configured todetermine a transmission parameter and/or a reception parameter of asignal corresponding to the second-type grouping indication informationaccording to the second-type grouping indication information.

In an alternative embodiment, the signal includes at least one of acontrol channel signal, a data channel signal and a reference signal.

In an alternative embodiment, the first acquisition module 262 mayacquire the second-type grouping indication information in at least oneof the manners described below. The second-type grouping indicationinformation is acquired according to a rule agreed with the firstcommunication node. Semi-static signaling is received and thesecond-type grouping indication information is acquired from thesemi-static signaling. Dynamic signaling is received and the second-typegrouping indication information is acquired from the dynamic signaling.A system message is received and the second-type grouping indicationinformation is acquired from the system message.

In an alternative embodiment, the first acquisition module 262 maydetermine the transmission parameter and/or the reception parameter ofthe signal corresponding to the second-type grouping indicationinformation in the manners described below. A correspondence pre-agreedwith the first communication node is determined. The correspondence is acorrespondence between the second-type grouping indication informationand the transmission parameter and/or the reception parameter. Thetransmission parameter and/or the reception parameter are determinedaccording to the correspondence and the second-type grouping indicationinformation.

In an alternative embodiment, the correspondence between the second-typegrouping indication information and the transmission parameter and/orthe reception parameter is included in first-type grouping indicationinformation fed back to a first communication node.

In an alternative embodiment, the transmission parameter includes atleast one of: an MCS set corresponding to the signal, a multiplexingmanner used by the signal, a length of a cyclic prefix (CP)corresponding to the signal, a number of space division multiplexinglayers used by the signal, demodulation reference signal portinformation used by the signal, quasi-co-located reference signalresource information corresponding to the signal, structural informationcorresponding to the signal, a channel characteristic reference signalcorresponding to the signal and a transmission manner corresponding tothe signal; where the structural information includes at least one of: aCP length of a start symbol of a time unit, information indicatingwhether the start symbol of the time unit includes a synchronizationsignal, and a CP length of a last symbol of the time unit; and/or thereception parameter includes a receiving resource for receiving thesignal. Optionally, the receiving resource includes at least one of: areceiving port, a receiving antenna, a receiving beam, a receivingprecoding weight, receiving time, receiving frequency-domain resource, areceiving sector and a receiving sequence.

In an alternative embodiment, a grouping manner indicated by thesecond-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to each ofresources in a candidate resource set, grouping according to a channelquality corresponding to each of the resources in the candidate resourceset, grouping according to a predetermined multiplexing manner, groupingaccording to a timing advance (TA) parameter, grouping according to acyclic prefix (CP) length, grouping according to a space divisionmultiplexing manner, grouping according to a quasi-co-locationrelationship, grouping according to a transmitted measurement referencesignal, and grouping according to a channel characteristic.

In an alternative embodiment, the receiving resource includes at leastone of: the receiving beam, the receiving antenna, the receiving port, areceiving precoding matrix, the receiving time, the receivingfrequency-domain resource, the receiving sector and the receivingsequence.

In alternative embodiment, the information on the resources in the groupincludes resource information of the reference signal. The referencesignal includes at least one of: a demodulation reference signal and ameasurement reference signal.

In an alternative embodiment, resources in a same group have a samechannel characteristic and/or quasi-co-location information.

In an alternative embodiment, a correspondence exists between the atleast one group index and port information of the measurement referencesignal transmitted by a second communication node. The secondcommunication node acquires the second-type grouping information.

FIG. 27 is a block diagram of a signal receiving device according to anembodiment of the present invention. As shown in FIG. 27, the deviceincludes a second acquisition module 272 and a first receiving module274. The device is described below.

The second acquisition module 272 is configured to acquire third-typegrouping indication information. The first receiving module 274 isconnected to the second acquisition module 272 and configured to receivea demodulation reference signal and/or a control channel according tothe third-type grouping indication information.

In an alternative embodiment, the third-type grouping indicationinformation includes at least one of: the number of the groups,indication on resources in each group, information on a number ofresources in each group, grouping manner indication information andgroup index information.

In an alternative embodiment, the second acquisition module 272 mayacquire the third-type grouping indication information in at least oneof the manners described below. Feedback information is acquiredaccording to a signal transmitted by a first communication node, wherethe feedback information includes the third-type grouping indicationinformation. A second communication node may receive the signaltransmitted by the first communication node, acquire the feedbackinformation and feed back the feedback information to the firstcommunication node. The third-type grouping indication information isacquired according to a rule agreed with the first communication node.Signaling information is received, where the signaling informationincludes the third-type grouping indication information. The receivingthe signaling information may include receiving the third-type groupingindication information transmitted by semi-static signaling, receivingthe third-type grouping indication information transmitted by dynamicsignaling, and receiving the third-type grouping indication informationtransmitted through a system message.

In an alternative embodiment, the first receiving module may receive thedemodulation reference signal and/or the control channel in the mannerdescribed below. According to the third-type grouping indicationinformation, the demodulation reference signal and/or the controlchannel are received on time division multiplexed N1 resources, whereN1=x×N or N1 is less than or equal to N, where N1 is an integer greaterthan 0, N is a number of third-type groups included in the third-typegrouping indication information and x is an integer greater than orequal to 1.

In an alternative embodiment, the demodulation reference signal and/orthe control channel are received on the N1 resources for transmittingthe demodulation reference signal by using a receiving resource in areceiving resource set. One or more receiving resources are selectedfrom the receiving resource set according to a certain rule, and dataand/or a control signal and/or a reference signal subsequent to thedemodulation reference signal are received according to the selected oneor more receiving resources.

In an alternative embodiment, the device further includes a secondprocessing module. The second processing module is configured to obtainthe receiving resource set in at least one of the manners describedbelow. The receiving resource set includes receiving resourcescorresponding to all groups indicated by the third-type groupingindication information. The receiving resource set includes receivingresources corresponding to N2 group indexes agreed with the firstcommunication node, where N2 is an integer greater than or equal to 1.The receiving resource set is determined by acquiring signalingindication information.

In an optional embodiment, the receiving resource includes at least oneof: a receiving beam, a receiving antenna, a receiving port, a receivingprecoding matrix, receiving time, receiving frequency-domain resource, areceiving sector and a receiving sequence.

In an alternative embodiment, the second processing module is furtherconfigured to acquire x and/or N1 before the demodulation referencesignal and/or the control channel are received on the time divisionmultiplexed N1 resources according to the third-type grouping indicationinformation.

In an alternative embodiment, the second processing module may acquire xand/or N1 in at least one of the manners described below. x and/or N1are acquired in a manner agreed with the first communication node. xand/or N1 are acquired in a semi-static signaling configuration manner.x and/or N1 are acquired in a dynamic signaling configuration manner.

In an alternative embodiment, the first receiving module 274 may receivethe demodulation reference signal and/or the control channel in themanner described below. The demodulation reference signal and/or thecontrol channel are received on an agreed time unit according to thethird-type grouping indication information, and the demodulationreference signal and/or the control channel are received on only onetime division multiplexed resource on a non-agreed time unit.

FIG. 28 is a block diagram of a device for receiving feedbackinformation according to an embodiment of the present invention. Asshown in FIG. 28, the device includes a second receiving module 282 anda second transmitting module 284. The device is described below.

The second receiving module 282 is configured to receive the feedbackinformation from a second communication node. The feedback informationincludes indication information for indicating M resources selected bythe second communication node and first-type grouping indicationinformation for indicating that the second communication node dividesthe M resources into N first-type resource groups. The secondtransmitting module 284 is connected to the second receiving module 282and configured to perform resource scheduling and/or signal transmissionaccording to the feedback information. Both N and M are integers, N isless than or equal to M, and the M resources are selected from acandidate resource set.

In an alternative embodiment, the device further includes a thirdprocessing module. The third processing module is configured to perform,before the feedback information is received from the secondcommunication node, at least one of the operations described below.Signals corresponding to all or part of resources in the candidateresource set are transmitted to the second communication node.Information for determining the first-type grouping indicationinformation is transmitted to the second communication node, where theinformation includes at least one of: grouping restriction indicationinformation, a parameter for determining a grouping rule, a thresholdparameter for determining groups, configuration indication informationof the candidate resource set and grouping manner indicationinformation.

A number of resources in a same first-type resource group is less thanor equal to a, and a number N of first-type resource groups is less thanor equal to b; or the number of resources in the same first-typeresource group is a fixed number a, and the number N of first-typeresource groups is a fixed number b where both a and b are naturalnumbers greater than or equal to 1.

In an alternative embodiment, a grouping manner indicated by thefirst-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to eachresource; grouping according to a channel quality corresponding to eachresource; grouping according to a predetermined multiplexing manner;grouping according to a timing advance (TA) parameter; groupingaccording to a cyclic prefix (CP) length; grouping according to a spacedivision multiplexing manner; and grouping according to aquasi-co-location relationship.

In an alternative embodiment, the grouping according to a predeterminedmultiplexing manner includes the grouping according to a space divisionmultiplexing manner.

In an alternative embodiment, the receiving resource includes at leastone of: a receiving beam, a receiving antenna, a receiving port, areceiving precoding matrix, receiving time, receiving frequency-domainresource, a receiving sector and a receiving sequence.

In an alternative embodiment, the N first-type resource groups have atleast one of the characteristics described below. A same first-typeresource group corresponds to a same TA. Different first-type resourcegroups correspond to different TAs. Resources in the same first-typeresource group are allowed to be scheduled in a same time unit. All orpart of the resources in the same first-type resource group are allowedto be scheduled in the same time unit. The different first-type resourcegroups are scheduled in different time units and not schedulable in thesame time unit. A multiplexing manner set of the resources in the samefirst-type resource group is a set A, and a multiplexing manner set ofresources in the different first-type resource groups is a set B, wherethe set B is a true subset of the set A or the set A is a true subset ofthe set B. The resources in the same first-type resource group are notallowed to be space division multiplexed in the same time unit, theresources in the different first-type resource groups are allowed to bespace division multiplexed in the same time unit, where a number ofspace division multiplexing layers is less than or equal to the numberof first-type resource groups. A first CP length is adopted when theresources in the same first-type resource group are simultaneouslyscheduled in the same time unit or switched between different timeunits. A second CP length is adopted when the resources in the differentfirst-type resource groups are scheduled in the same time unit. Whenscheduled resources switch between the different first-type resourcegroups or combination of first-type resource groups, a switching startorthogonal frequency division multiplexing (OFDM) symbol uses a third CPlength, and/or a switching start position has a synchronization signalused for a reception timing of the second communication node, and/or alast OFDM symbol before switching uses the third CP length. The samefirst-type resource group has a same quasi-co-location and all theresources in the same first-type resource group share a quasi-co-locatedreference signal.

In an alternative embodiment, the resources in the same first-typeresource group are allowed to be space division multiplexed in a sametime unit, where the number of space division multiplexing layers isless than or equal to a number of resources in the first-type resourcegroup; and the resources in different first-type resource groups are notallowed to be space division multiplexed in the same time unit; and/orCP lengths corresponding to the resources in different first-typeresource groups scheduled in the same time unit is obtained according todifferences of resource group indexes of the different first-typeresource groups where the resources are located.

In an alternative embodiment, the third CP length is greater than thefirst CP length and the second CP length.

In an alternative embodiment, one of the characteristics described belowis included. The resources in the same first-type resource group are notspace division multiplexed and the resources in different first-typeresource groups are space division multiplexed. The resources in thesame first-type resource group are space division multiplexed and theresources in different first-type resource groups are not space divisionmultiplexed.

In an alternative embodiment, one of the characteristics described belowis included. A maximum number of space division multiplexing layersavailable to the resources in the same first-type resource group is lessthan or equal to a maximum number of space division multiplexing layersavailable to the resources in different first-type resource groups. Themaximum number of space division multiplexing layers available to theresources in the same first-type resource group is greater than or equalto the maximum number of space division multiplexing layers available tothe resources in different first-type resource groups. The maximumnumber of space division multiplexing layers available to the resourcesin the same first-type resource group is less than the maximum number ofspace division multiplexing layers available to the resources indifferent first-type resource groups. The maximum number of spacedivision multiplexing layers available to the resources in the samefirst-type resource group is greater than the maximum number of spacedivision multiplexing layers available to the resources in differentfirst-type resource groups.

In an alternative embodiment, the device further includes agreeing withthe second communication node on one of the characteristics describedbelow. The second communication node is capable of simultaneouslyreceiving the resources in the same first-type resource group. Thesecond communication node is incapable of simultaneously receiving theresources in different first-type resource groups. The secondcommunication node is capable of simultaneously receiving the resourcesin the same first-type resource group and the second communication nodeis incapable of simultaneously receiving the resources in differentfirst-type resource groups. The second communication node is capable ofsimultaneously receiving the resources in the same first-type resourcegroup and the second communication node is capable of simultaneouslyreceiving the resources in different first-type resource groups.

In an alternative embodiment, the device further includes agreeing withthe second communication node on one of the characteristics describedbelow. The second communication node is capable of simultaneouslyreceiving the resources in different first-type resource groups. Thesecond communication node is incapable of simultaneously receiving theresources in the same first-type resource group. The secondcommunication node is capable of simultaneously receiving the resourcesin different first-type resource groups and the second communicationnode is incapable of simultaneously receiving the resources in the samefirst-type resource group. The second communication node is capable ofsimultaneously receiving the resources in different first-type resourcegroups and the second communication node is capable of simultaneouslyreceiving the resources in the same first-type resource group.

In an alternative embodiment, the device includes at least one of thefollowing manners: the N first-type resource groups are associated witha channel measurement related process; and the N first-type resourcegroups are associated with a channel measurement related set.

In an alternative embodiment, the channel measurement related process isa channel state information (CSI) process; and the channel measurementrelated set includes at least one of a CSI reporting set (CSI reportingsettings), a resource set (Resource settings), a CSI measurement set(CSI measurement settings), a link set (link settings), and a referencesignal (RS) set (RS settings), where the CSI measurement set includesone or more links, each of which is used for establishing a relationshipbetween the resource set and the CSI reporting set.

FIG. 29 is a block diagram of a device for notifying grouping indicationinformation according to an embodiment of the present invention. Asshown in FIG. 29, the device includes a second determining module 292and a third transmitting module 294. The device is described below.

The second determining module 292 is configured to determine second-typegrouping indication information. The third transmitting module 294 isconnected to the second determining module 292 and configured to notifya second communication node of the second-type grouping indicationinformation. The second-type grouping indication information includes atleast one of: information on a group index set, grouping mannerindication information, information on resources in a group, where thegroup index set includes at least one group index.

In an optional embodiment, the third transmitting module 294 may notifythe second communication node of the second-type grouping indicationinformation in at least one of the manners described below. Thesecond-type grouping indication information is agreed with the secondcommunication node. The second-type grouping indication information istransmitted to the second communication node by semi-static signaling.The second-type grouping indication information is transmitted to thesecond communication node by dynamic signaling. The second-type groupingindication information is transmitted to the second communication nodethrough a system message.

In an alternative embodiment, the second-type grouping indicationinformation is used by the second communication node to determine atransmission parameter and/or a reception parameter of a signalcorresponding to the second-type grouping indication information.

In an alternative embodiment, the transmission parameter includes atleast one of: an MCS set corresponding to the signal, a multiplexingmanner used by the signal, a length of a cyclic prefix (CP)corresponding to the signal, a number of space division multiplexinglayers used by the signal, demodulation reference signal portinformation used by the signal, quasi-co-located reference signalresource information corresponding to the signal, structural informationcorresponding to the signal, a channel characteristic reference signalcorresponding to the signal and a transmission manner corresponding tothe signal. The structural information includes at least one of: a CPlength of a start symbol of a time unit, information indicating whetherthe start symbol of the time unit includes a synchronization signal, anda CP length of a last symbol of the time unit. The reception parameterincludes a receiving resource for receiving the signal. Optionally, thereceiving resource includes at least one of: a receiving port, areceiving antenna, a receiving beam, a receiving precoding weight,receiving time, receiving frequency-domain resource, a receiving sectorand a receiving sequence.

In an alternative embodiment, the signal includes at least one of a datachannel signal, a control channel signal and a reference signal.

In an alternative embodiment, the device further includes a fourthprocessing module. The fourth processing module is configured todetermine, before the second-type grouping indication information istransmitted to the second communication node, a correspondence betweenthe second-type grouping indication information and a parameter, wherethe parameter includes the transmission parameter and/or the receptionparameter.

In an alternative embodiment, the fourth processing module may determinethe correspondence between the second-type grouping indicationinformation and the transmission parameter and/or the receptionparameter in at least one of the manners described below. Thecorrespondence between the second-type grouping indication informationand the parameter is determined in an agreed manner with the secondcommunication node. The correspondence between the second-type groupingindication information and the parameter is determined by receivingfirst-type grouping indication information fed back by the secondcommunication node. The correspondence is transmitted to the secondcommunication node.

In an alternative embodiment, the manner in which the correspondencebetween the second-type grouping indication information and theparameter is determined in the agreed manner with the secondcommunication node includes obtaining the correspondence between thesecond-type grouping indication information and the parameter accordingto a measurement reference signal transmitted by the secondcommunication node.

In an alternative embodiment, the first-type grouping indicationinformation includes at least one of: a number of the first-typeresource groups, indication on the resources in each group, informationon a number of resources in each group, grouping manner indicationinformation, group index information and information on a commonparameter corresponding to each group.

In an alternative embodiment, the common parameter corresponding to eachgroup includes at least one of the following parameters: a CP lengthcorresponding to each group, a precoding matrix indicator (PMI)corresponding to each group, a rank indicator (RI) corresponding to eachgroup, a channel quality indication (CQI) corresponding to each group, atiming advance (TA) parameter corresponding to each group, aquasi-co-location parameter corresponding to each group, and a receivingresource corresponding to each group.

In an alternative embodiment, a grouping manner indicated by thesecond-type grouping indication information includes at least one of:grouping according to a receiving resource corresponding to atransmission resource, grouping according to a channel qualitycorresponding to the transmission resource, grouping according to apredetermined multiplexing manner, grouping according to the timingadvance (TA) parameter, grouping according to a cyclic prefix (CP)length, grouping according to a space division multiplexing manner,grouping according to a quasi-co-location relationship, groupingaccording to a measurement reference signal transmitted by the secondcommunication node, and grouping according to a channel characteristic.The transmission resource includes at least one of: a transmission beamresource, a transmission antenna resource, a transmission port resource,a transmission frequency domain resource, a transmission sequenceresource and a transmission time domain resource.

In an alternative embodiment, the receiving resource includes at leastone of: a receiving beam, a receiving antenna, a receiving port, areceiving precoding matrix, receiving time, receiving frequency-domainresource, a receiving sector and a receiving sequence.

In an alternative embodiment, the information on the resources in thegroup includes resource information of the reference signal. Thereference signal includes at least one of: a demodulation referencesignal and a measurement reference signal.

In an alternative embodiment, resources in a same group have a samechannel characteristic and/or quasi-co-location information.

In an alternative embodiment, a correspondence exists between the atleast one group index and port information of the measurement referencesignal transmitted by the second communication node.

FIG. 30 is a block diagram of a signal transmission device according toan embodiment of the present invention. As shown in FIG. 30, the deviceincludes a third determining module 302 and a fourth transmitting module304. The device is described below.

The third determining module 302 is configured to determine third-typegrouping indication information. The fourth transmitting module 304 isconnected to the third determining module 302 and configured to transmita demodulation reference signal and/or a control channel according tothe third-type grouping indication information.

In an alternative embodiment, the third-type grouping indicationinformation includes at least one of: the number of the first-typeresource groups, indication on the resources in each of the N first-typeresource groups, information on a number of resources in each group,grouping manner indication information and group index information.

In an alternative embodiment, the third determining module 302 maydetermine the third-type grouping indication information in at least oneof the manners described below. The third-type grouping indicationinformation is determined according to first-type grouping indicationinformation received from a second communication node. The third-typegrouping indication information is determined according to a rule agreedwith the second communication node.

In an alternative embodiment, the fourth transmitting module 304 maytransmit the demodulation reference signal and/or the control channel inthe manner described below. According to the third-type groupingindication information, the demodulation reference signal and/or thecontrol channel are transmitted on time division multiplexed N1resources, where N1=x×N or N1 is less than or equal to N, where N1 is aninteger greater than 0, N is a number of groups included in thethird-type grouping indication information and x is an integer greaterthan or equal to 1.

In an alternative embodiment, the device further includes a fifthprocessing module. The fifth processing module is configured toconfigure x and/or N1 for the second communication node before thedemodulation reference signal and/or the control channel are transmittedaccording to the third-type grouping indication information.

In an alternative embodiment, the fifth processing module may notify thesecond communication node of x and/or N1 in at least one of the mannersdescribed below. The second communication node is notified of x and/orN1 in an agreed manner with the second communication node. The secondcommunication node is notified of x and/or N1 by semi-static signaling.The second communication node is notified of x and/or N1 by dynamicsignaling.

In an alternative embodiment, the demodulation reference signal istransmitted on the N1 resources in a same transmission manner, where atransmission manner of the demodulation reference signal includes atleast one of: a transmission beam, a transmission port, a transmissionantenna, a transmission precoding matrix and a transmission frequencydomain resource.

In an alternative embodiment, the demodulation reference signal and/orthe control channel transmitted on the N1 resources have a sametransmission manner as data and/or a control signal and/or a referencesignal transmitted subsequent to the demodulation reference signaland/or the control channel. The transmission manner of the demodulationreference signal includes at least one of: the transmission beam, thetransmission port, the transmission antenna, the transmission precodingmatrix and the transmission frequency domain resource.

In an alternative embodiment, the fourth transmitting module 304 maytransmit the demodulation reference signal and/or the control channel inthe manner described below. The demodulation reference signal and/or thecontrol channel are transmitted on an agreed time unit according to thethird-type grouping indication information, and the demodulationreference signal and/or the control channel are transmitted on only onetime division multiplexed resource on a non-agreed time unit.

It is to be noted that the various modules described above may beimplemented by software or hardware. Implementation by hardware may, butmay not necessarily, be performed in the following manner: the variousmodules described above are located in a same processor, or the variousmodules described above are located in their respective processors inany combination form.

An embodiment of the present invention further provides a storagemedium. Optionally, in the embodiment, the storage medium may beconfigured to store program codes for executing the steps describedabove.

In an alternative embodiment, in the embodiment, the storage medium mayinclude, but is not limited to, a USB flash disk, a ROM, a RAM, a mobilehard disk, a magnetic disk, an optical disk or another medium capable ofstoring the program codes.

In an alternative embodiment, in the embodiment, a processor executesthe steps described above according to the program codes stored in thestorage medium.

In an alternative embodiment, for specific examples in the embodiment,reference may be made to the examples described in the above-mentionedembodiments and optional implementation modes, and repetition will notbe made herein. In the embodiments described above, the receiving endmay group transmission resources and transmit feedback to thetransmitting end, the resources in the same group have certain commoncharacteristics, and the resources in different groups have differentcharacteristics; limited feedback information is used to provide thetransmitting end with more information so that the transmitting end hasthe improved scheduling flexibility and can reasonably and effectivelymanage the resources. In this way, the transmitting end may obtaininformation on receiving beams corresponding to each transmission beamgroup of the receiving end so that the transmitting end flexibly adjuststransmission beams, that is, the transmission beams are transparent tothe receiving end, thereby improving the scheduling flexibility of abase station. Furthermore, considering that a number of receiving beamsis generally less than a number of transmission beams in downlinkcommunications, a number of bits occupied by notifying the informationon the receiving beams is less than a number of bits occupied bynotifying the transmission beams in control signaling in datatransmission. Furthermore, considering different characteristics of thetransmission beams such as arrival time, quasi-co-location and acorrelation, the resources are grouped according to thesecharacteristics so that the transmitting end preforms reasonable andeffective management and scheduling on the resources according togrouping information.

Apparently, it should be understood by those skilled in the art thateach of the above-mentioned modules or steps of the present inventionmay be implemented by a general-purpose computing device, the modules orsteps may be concentrated on a single computing device or distributed ona network composed of multiple computing devices, and alternatively, themodules or steps may be implemented by program codes executable by thecomputing devices, so that the modules or steps may be stored in astorage device and executed by the computing devices. In somecircumstances, the illustrated or described steps may be executed insequences different from those described herein, or the modules or stepsmay be made into various integrated circuit modules separately, ormultiple modules or steps therein may be made into a single integratedcircuit module for implementation. In this way, the present invention isnot limited to any specific combination of hardware and software.

The above are only preferred embodiments of the present invention andare not intended to limit the present invention. For those skilled inthe art, the present invention may have various modifications andvariations. Any modifications, equivalent substitutions, improvementsand the like made within the spirit and principle of the presentinvention should fall within the scope of the present invention.

INDUSTRIAL APPLICABILITY

As described above, the method and device for feeding back groupingindication information and the method and device acquiring groupingindication information have the following benefits. The receiving endgroups transmission resources and feedbacks the grouping information tothe transmitting end. The resources in the same group have certaincommon characteristics, and the resources in different groups havedifferent characteristics. Using limited feedback information, moreinformation is provided to the transmitting end, so that thetransmitting end has the improved scheduling flexibility and canreasonably and effectively manage the resources. Therefore, the presentinvention may solve the problem in the existing art that thetransmission beams and/or receiving beams cannot be reasonably andflexibly managed and scheduled, and achieve the flexibly managing andscheduling the transmission beams.

What is claimed is:
 1. A method for feeding back grouping indicationinformation, applied to a terminal device, comprising: determining acandidate resource set, wherein the candidate resource set comprises Qsecond-type resource groups, wherein Q is an integer greater than orequal to 1; receiving a signal transmitted on a resource of thecandidate resource set, wherein the signal is transmitted by a basestation; selecting M resources from the candidate resource set accordingto the received signal; and dividing the M resources into N first-typeresource groups based on the received signal, wherein M is an integergreater than 1 and N is a positive integer less than or equal to M; andfeeding back first-type grouping indication information for indicatingthat the M resources are divided into the N first-type resource groupsto the base station, wherein the first-type grouping indicationinformation comprises indication on resources in each first-typeresource group of the N first-type resource groups, wherein theindication on resources in each first-type resource group of the Nfirst-type resource groups comprises an index of each resource of eachfirst-type resource group of the N first-type resource groups; whereineach first-type resource group of the N first-type resource groupscorresponds to one receiving beam at the terminal device, or correspondsto one receiving beam combination at the terminal device of one timeinstance; wherein a resource in the candidate resource set comprises aresource of the signal, comprising following resource types: atransmission port resource, a transmission sequence resource and atransmission time domain resource.
 2. The method of claim 1, wherein, inthe first-type grouping indication information, resources in each of theN first-type resource groups are sequentially arranged according toreceiving qualities of the resources.
 3. The method of claim 1, whereinthe dividing the M resources into N first-type resource groupscomprises: dividing the M resources into the N first-type resourcegroups according to grouping information which comprises at least oneof: grouping restriction indication information or configurationindication information of the candidate resource set, wherein thegrouping information is configured by the base station through signalingor pre-agreed with the base station.
 4. The method of claim 1, wherein:the first-type grouping indication information further comprises atleast one of: a number of the first-type resource groups, information ona number of resources in each of the N first-type resource groups,grouping manner indication information, group index information orinformation on a common parameter corresponding to each of the Nfirst-type resource groups.
 5. The method of claim 1, wherein: resourcesin a same first-type resource group belong to more than one groups ofthe Q second-type resource groups.
 6. The method of claim 1, wherein, Nis larger than
 1. 7. The method of claim 1, wherein the signal comprisesa synchronization signal.
 8. The method of claim 1, comprising at leastone of the following: different resources in the candidate resource setcorrespond to different transmission beams of the base station;different first-type resource groups comprise a same number ofresources; or different first-type resources groups correspond todifferent receiving beams of the terminal device at different timeinstances.
 9. A terminal device, comprising: an antenna and a processor,wherein the processor is configured to execute at least one program toimplement a method for feeding back grouping indication information,wherein the method for feeding back grouping indication informationcomprises: determining a candidate resource set, wherein the candidateresource set comprises Q second-type resource groups, wherein Q is aninteger greater than or equal to 1; receiving a signal transmitted on aresource of the candidate resource set, wherein the signal istransmitted by a base station; selecting M resources from the candidateresource set according to the received signal; and dividing the Mresources into N first-type resource groups based on the receivedsignal, wherein M is an integer greater than 1 and N is a positiveinteger less than or equal to M; and feeding back first-type groupingindication information for indicating that the M resources are dividedinto the N first-type resource groups to the base station, wherein thefirst-type grouping indication information comprises indication onresources in each first-type resource group of the N first-type resourcegroups, wherein the indication on resources in each first-type resourcegroup of the N first-type resource groups comprises an index of eachresource of each first-type resource group of the N first-type resourcegroups; wherein each first-type resource group of the N first-typeresource groups corresponds to one receiving beam at the terminaldevice, or corresponds to one receiving beam combination at the terminaldevice of one time instance; wherein a resource in the candidateresource set comprises a resource of the signal, comprising followingresource types: a transmission antenna resource, a transmission portresource, a transmission sequence resource and a transmission timedomain resource.
 10. The terminal device according to claim 9, wherein:in the first-type grouping indication information, resources in each ofthe N first-type resource groups are sequentially arranged according toreceiving qualities of the resources.
 11. The terminal device of claim9, wherein the signal comprises a synchronization signal.
 12. Theterminal device of claim 9, comprising at least one of the following:different resources in the candidate resource set correspond todifferent transmission beams of the base station; different first-typeresource groups comprise a same number of resources; or differentfirst-type resources groups correspond to different receiving beams ofthe terminal device at different time instances.
 13. The terminal deviceof claim 9, wherein the dividing the M resources into N first-typeresource groups comprises: dividing the M resources into the Nfirst-type resource groups according to grouping information whichcomprises at least one of: grouping restriction indication informationor configuration indication information of the candidate resource set,wherein the grouping information is configured by the base stationthrough signaling or pre-agreed with the base station.
 14. The terminaldevice of claim 9, wherein: resources in a same first-type resourcegroup belong to more than one groups of the Q second-type resourcegroups.
 15. A method for receiving feedback information, applied to abase station, comprising: receiving feedback information from a terminaldevice, wherein the feedback information comprises first-type groupingindication information for indicating that the terminal device dividesthe M resources into N first-type resource groups, wherein thefirst-type grouping indication information comprises indication onresources in each first-type resource group of the N first-type resourcegroups, wherein the indication on resources in each first-type resourcegroup of the N first-type resource groups comprises an index of eachresource of each first-type resource group of the N first-type resourcegroups; and performing resource scheduling and/or signal transmissionaccording to the feedback information; wherein each first-type resourcegroup of the N first-type resource groups corresponds to one receivingbeam at the terminal device, or corresponds to one receiving beamcombination at the terminal device of one time instance; wherein both Nand M are integers, N is less than or equal to M, and the M resourcesare selected from a candidate resource set comprising Q second-typeresource groups, wherein Q is an integer greater than or equal to 1;wherein a resource in the candidate resource set comprises a resource ofa signal transmitted on the resource of the candidate resource set,comprising following resource types: a transmission port resource, atransmission sequence resource and a transmission time domain resource.16. The method of claim 15, wherein, in the first-type groupingindication information, resources in each of the N first-type resourcegroups are sequentially arranged according to receiving qualities of theresources.
 17. The method of claim 15, wherein, resources in a samefirst-type resource group belong to more than one groups of the Qsecond-type resource groups.
 18. A base station, comprising: an antennaand a processor, wherein the processor is configured to execute at leastone program to implement the method of claim
 15. 19. The method of claim15, comprising at least one of the following: different resources in thecandidate resource set correspond to different transmission beams of thebase station; the signal comprises a synchronization signal; differentfirst-type resource groups comprise a same number of resources; ordifferent first-type resources groups correspond to different receivingbeams of the terminal device at different time instances.
 20. The methodof claim 15, further comprising: configuring or pre-agreeing groupinginformation for indicating that the terminal device divides the Mresources into N first-type resource groups, wherein the groupinginformation comprises at least one of: grouping restriction indicationinformation or configuration indication information of the candidateresource set.